Sure enough, President Wei expected well, after Nurhachi knew that Karaqin was lost, he did not immediately announce the withdrawal of the army, but only withdrew the army besieging Ningyuan City and returned to defend Karaqin.

Jiannu did not encircle Karaqin, but only built a large battalion outside Karaqin City to replace the role of Karaqin in transiting food, and made a posture of being ready to fight desperately with the infantry brigade in Karaqin City.

In addition, the three large battalions of the mixed coalition army of the Jiannu and Mongols who threatened Shanhaiguan, Qiantunpu and Gaotaibao were still there.

"Abai and Tang Gugu, these two bastards, Karaqin was lost, and they were captured by the treasure army, this time, our Dajin Kingdom has lost all its face!" Nurhachi said angrily.

"Father Khan, the key now is to rescue the two elder brothers." Huang Tai Chi Dao.

Dai Shan and others also said that they should try to rescue Tang Gu and Abai first.

Everyone just can't say it clearly, through private negotiations with Wei Bao, they are negotiating with Wei Bao about their marriage to Cong Gulun anyway.

Nurhachi understood what everyone meant, and let out a long sigh, thinking that Wei Bao had already offered a compensation of 10 million taels of silver, and also ceded two cities as a dowry, and now he won a game, and he didn't know how to ask for a price!

"I can't talk about it at this time, I firmly believe that my warriors will recapture Karaqin and rescue the two straw bales of Abai and Tanggu!" Nurha equator: "There is no such thing as a strategic place in the steppe!" The loss of Karaqin does not affect us much! I estimate that the food supply of the treasure army is also very difficult now, and the battle has already reached this point, and there is no reason to withdraw the troops! ”

Everyone was troubled by Nurhachi's stubbornness, but there was nothing they could do.

Everyone felt that the Great Khan was in a hurry, and he was using the not strong national strength of the Dajin Kingdom to consume, just like a person cutting meat on his body with his own hands.

Madman Tan admires Nurhachi's tenacity very much, the supply of the treasure army is indeed a little difficult, but fortunately, the treasure army has heaven and earth to back, and it can hold on.

It's just that if he continues to hold on so hard, Madman Tan knows how much pressure it will put on Weijiazhuang, Liaonan, and North Korea.

It's not going to be a good winter.

"According to the situation that Liu Dahe came back, there is food in Karaqin that can supply an infantry brigade for a winter, and there will be no shortage of water when it snows in winter, so there is no need to consider reinforcing Karaqin, and Jiannu does not dare to storm Karaqin, they have more than 40,000 people, all of them are sent over, and they can't defeat the city guarded by a complete infantry brigade." Madman Tan said: "Let's continue to respond to all changes with the same, just confront Jiannu, so as to minimize consumption!" Liu Dahe's withdrawal of the cavalry regiment from Karaqin was a dangerous move, but it was not bad, at least the only mobile force was not blocked by the city. ”

All the generals nodded, thinking that the division had analyzed well.

"Brother Tan, I'm afraid that Jiannu will send a group of men and horses to find our cavalry regiment, now the cavalry regiment will definitely not be able to go back to Lin Dan Khan's area to continue guerrillas, if it is bitten by Jiannu, it can only run to Gubeikou, Jiannu's cavalry pursuit ability is not bad, only a Jiannu iron cavalry of three or four thousand people is enough, and there is only one cavalry regiment of more than 1,400 people left." Madman Tan said.

Madman Tan didn't want to use the word enough, and wanted to say that it was enough for the cavalry regiment to be surrounded and annihilated, but he felt that it was too demoralizing and it was too unlucky to use this kind of word for his own troops, so he forcibly changed his words.

"I know what you said, but we have no choice now, the road is Liu Dahe's own choice, as the commander of the cavalry regiment, before he ran a long distance, I told him that he could fight as much as he wanted, and there was also the president's instructions, it depends on Liu Dahe's cavalry regiment and the infantry brigade that stuck to Karaqin to do the article, we can't help." Madman Tan said.

Lin Wenbiao nodded, his brows furrowed, because as the battle became more stale, it became more and more difficult for the agents of the Statistics Bureau to obtain information.

Now Jiannu attaches great importance to the secrecy of information.

In the next few days, the Baojun cavalry regiment was bouncing around, Jiannu came, they ran, Jiannu left, they chased, in fact, there was no big move, and then after the food ran out, they ran to Gubeikou.

It didn't have a big impact, the war still has to rely on strength after all, not everyone is Huo Quai, eight thousand hussars can sweep the desert.

President Wei had nothing to do, returned to Weijiazhuang from Shanhaiguan, and had not been to the Military Industry Department for a while, and he wanted to know if there were any new actions now.

After Wei Bao met with Deng Daliang and Deng Erxian, President Wei listened to Deng Erxian's work report for more than half a year.

In general, President Wei is very satisfied, the textbooks from primary school to junior high school are already very perfect, and they are very characteristic of this era.

The imitation of the generator also made President Wei very interested.

A DC generator is a machine that converts mechanical energy into direct current electrical energy.

It is mainly used as a DC motor required for DC motors, electrolysis, electroplating, electrometallurgy, charging and excitation of alternators. Although in places where direct current is needed, electric rectifier components are also used to turn alternating current into direct current, but from the perspective of ease of use, reliability of operation and some working performance, DC motors cannot be compared with alternators.

The generator was first produced in the second industrial revolution period, was made by the German engineer Siemens in 1866, it is driven by a water turbine, steam turbine, diesel engine or other power machinery, the water flow, air flow, fuel combustion or nuclear fission energy into function to the generator, and then converted by the generator into electricity.

Electricity is one of the most important sources of energy in modern society.

Although there are a variety of generators, they all work on the same principle and are based on the laws of electromagnetic force and induction.

Therefore, the general principle of generator construction is to use appropriate conductive materials and magnetic permeability to form circuits and magnetic circuits that carry out electromagnetic induction with each other, so as to generate electromagnetic power, so as to achieve the purpose of energy conversion.

In 1831 A.D., Faraday passed a wire in a closed circuit through an electromagnetic field, and the wire rotated to flow through the wire, so Faraday realized that there was a close connection between electricity and magnetic fields, and he built the first prototype generator, which included a copper disc that rotated in a magnetic field, which generated electricity.

Until now, all electricity was generated by electrostatic machines and batteries, neither of which could generate significant power.

However, Faraday's generator finally changed everything.

In 1832, the Frenchman Bixie invented the hand-cranked DC generator, the principle of which is to generate an induced electromotive force in the coil by rotating the permanent magnet to change the magnetic flux, and output this electromotive force in the form of DC voltage.

In 1866, Siemens of Germany invented the self-excited DC generator.

In 1869, Graham of Belgium made the ring armature and invented the ring armature generator.

This type of generator uses water power to turn the rotor of the generator.

But in the north, and even in the wider region, the mainstream should still use thermal power to generate electricity.

President Wei is a traverser, of course, he knows that the future power generation is all alternating current, and only alternating current is the right way.

In the general direction, President Wei does not have to take the wrong path.

The generator is mainly composed of rotors, stators, brushes, end covers and bearings.

President Wei listened to Deng Erxian's explanation and personally disassembled the equipment.

The stator is composed of a stator core, a base, a wire-wrapped winding, and other structural parts that hold these components in place.

The rotor is composed of rotor poles, rotor cores, slip rings, also known as copper rings, collector rings, rotating shafts and fans.

The generator current is generated by connecting and assembling the stator and rotor of the generator through the bearing, base and end cover, so that the rotor rotates in the stator, and a certain excitation current is introduced through the slip ring, so that the rotor becomes a rotating magnetic field, and the stator coil does the movement of cutting magnetic field lines, thereby generating an induced potential.

It is led out through the terminal block and connected to the circuit, so that an electric current is generated.

Because there is a break in the connection between the brush and the rotor, the rotor rotates in a certain direction to produce alternating current, referred to as alternating current.

A steam turbine generator is a generator for a steam turbine.

In order to obtain high efficiency, the steam turbine is generally made at high speed, usually 3000 rpm at a frequency of 50Hz, or 3600 rpm at a frequency of 60Hz.

In order to reduce the mechanical stress caused by centrifugal force and reduce the wind friction consumption of high-speed turbine generators, the rotor normally adopts a slender rotor.

Especially in the large-capacity high-speed unit above 3000 rpm, due to the relationship between the material strength, the rotor diameter is strictly limited, and generally cannot exceed 1.2 meters. The length of the rotor body is limited by the critical speed.

When the length of the body reaches more than 6 times the diameter, the second critical speed of the rotor will be close to the operating speed of the motor, and large vibrations may occur during operation.

Therefore, the size of the rotor of large high-speed turbine generators is strictly limited.

Depending on the form of energy, different generators can be made. Using water resources and water turbines, it can be made into hydro turbine generators; Due to the different reservoir capacity and head drop, it can be made into hydro turbine generators with different capacities and speeds.

Using coal, oil and other resources, and boilers, turbine steam engines, can be made into steam turbine generators, which are mostly high-speed motors.

Diesel generator set is a generator driven by an internal combustion engine fueled by diesel, which starts quickly and is easy to operate, but the cost of internal combustion engine power generation is high.

Diesel generator sets are generally used as emergency backup power supply, or mobile power stations and some areas where large power grids have not yet arrived.

The speed of diesel generator is generally 1500 rpm, and it is relatively simple to manufacture.

Therefore, the structural components of diesel generators, especially the rotating shafts, should have sufficient strength and rigidity to prevent these components from breaking due to vibration.

In addition, in order to prevent the uneven angular velocity of the generator due to torque ripple, the voltage fluctuation will be caused and the light will flicker.

The rotor of the diesel generator is also required to have a large moment of inertia, and the natural torsional vibration frequency of the shaft system should be more than 20% different from the frequency of any alternating component in the torque ripple of the diesel engine, so as to avoid resonance and cause shaft breaking accidents.

Of course, these are just Deng Erxian's research directions.

President Wei originally wanted to ask Deng Erxian how long it would take for thermal power generation to be used in practice.

Later, President Wei still didn't ask, feeling that his question was not interesting, and Deng Erxian definitely wanted to put it into use immediately, and he was not working hard.

Asking like this didn't help anything except make Deng Erxian feel anxious.

If you are really in a hurry, it is better to help Deng Erxian do the experiment by yourself, but unfortunately, President Wei knows his own level, and the two knives are not counted, and in modern times, let alone inventors, in fact, he does not even have the level of a mechanic.

President Wei secretly said in his heart that as long as he can put the engine into practice in five or even ten years, it is already very remarkable.

The official use of the engine will raise the scientific and technological level of the area under the jurisdiction of the Tiandi Association to the age of electricity in one fell swoop! What a great leap forward.

If it weren't for the high-yield crops of sweet potatoes, corn, sorghum, soybeans, and potatoes, even if he bought some grain from the south, he would not be able to rely on the existing development land to feed more than 7 million people.

President Wei said to Deng Erxian: "The research and development of the rifle cannot be stopped, but in the future, don't replace the equipment several times a year, it's too wasteful of money, at least the test should be stable, and the equipment should be upgraded once every two or three years." ”

Because there is no qualified steel technology, coupled with the immaturity of the process technology, from last year to this year, more than a dozen versions of the president's rifle have been made.

The regular army of the Bao Army has 30,000 horses, and the rifles used by the 30,000 people are also varied.

Deng Erxian replied: "President, we have visited all the famous handicraft masters, as long as the steel mill technology can keep up, we will definitely make the president's rifle more stable next year." ”

The excitement of Deng Erxian and Deng Daliang and others, in President Wei's expectations, from almost no industry to the current machine manufacturing bureau of Weijiazhuang, is simply a baby, how to compare with adults, watching babies grow up little by little, is indeed a very fulfilling thing.

Wei Bao's heart was anxious, and he couldn't wait for the technology tree to be upgraded to the level of the Republic of China or even higher.

But Wei Bao doesn't have any system, and what he carries is just an imitation ironclad ship for tourism, fortunately there are a lot of antique industrial equipment and products from the late nineteenth century, otherwise the technology tree would not have started yet.

President Wei likes to see his scientific and technological workers happy, which shows that their horizons have grown, and a large number of people are needed to invest in industry and technology, which is not something that can be done by one person.

Based on the popular ideas of ancient societies, the influence reached as far as other regions.

These ancient ideas were inherited consciously or unconsciously during the Middle Ages and the Renaissance and can be summed up in three words: war, health, and sports.

In the 18th century, strenuous sports and men's athletics were no longer practised, and people looked elsewhere for recreation and pleasure.

From this point of view, the situation in the UK is particularly surprising.

People no longer enjoyed the outdoors to the fullest as they did in the Tudor era, when Thomas Arnold and other founders of athletics education had not yet appeared.

Had it not been for Napoleon's efforts to consolidate Great Britain like the north wind to prevent the melting of snow and ice, the national identity of the British would not have been so distinct, and their natural roughness and malaise were probably the precursors of decline.

In France, tennis courts are deserted, and people exchange vows in them, not play.

The German Empire, however, was frantically trying.

Thus, military athletics was born in Berlin.

The real victors of the battles of 1866 and 1870 were elementary school teachers.

More and more adherents follow the precepts of German gymnastics and pursue powerful movements in practice, which can be summed up in one sentence and are essentially military.

Because this is the purpose of German gymnastics, it is easy to see what kind of qualities and flaws such an idea brings.

When they go to university, the greatest pleasure of young Germans is to fight with their classmates, and the stab marks on the face become a sign of pride.

There is also a high degree of consistency in the smallest details of life, and this strict rule seems to bring a kind of inner joy that neither the British nor the French can understand.

To this day, if you pass by a German university and attend a gathering of German students, you can see that everyone will drink all the wine in their glasses at the first order.

From this we can understand the influence of fanatical discipline on this great nation.

German gymnastics pursues powerful movements, emphasizing strength and energy.

It is only effective under this condition.

In order to maintain this energy, gymnasts must constantly be under the influence of belligerence.

The idea of war has always been a constant motivator for them, and once Germany is out of this idea, countless gymnastics groups will soon change.

The British like to take a tennis racket and a Bible with them when they travel the world, and they never leave them.

When Germans expatriate abroad, they like to bring sauerkraut and gymnastics.

President Wei believes that sports are an important part of civilization.

Therefore, this winter, President Wei is not only concerned about the telegraph, railways, telephone, scientific research, congresses, and expositions for the contribution of peace to the cause of peace.

Also concerned about the popularity of various sports, President Wei likes football, also likes basketball, all kinds of games, men's games, women's games, which makes President Wei have a lot of fun in Weijiazhuang.

Of course, there are happy things and there are unhappy things.

Through research, Wei Bao keenly found that in fact, if at this time, his system is the system of the society, and the resources are enough to be allocated.

Although the capitalist system of the Heaven and Earth Society has only been developed for less than two years, it has already bred the inherent contradictions of the capitalist system!

That's the uneven distribution!

The greed of the rich, and the shadow of the economic crisis.

Of course, because the economic foundation is weak and the power of the capitalists is still very weak, the monopoly capitalism of President Wei alone accounts for the majority of the areas under the rule of the Heaven and Earth Society.

Therefore, the dangers of the economic crisis have not yet been fully revealed.

The process by which President Wei discovered this phenomenon was also accidental and ironic.

President Wei actually found out from his parents.