ps: Thanks to "Jiang Fan" for the 10,000 coins he rewarded, and became the third helmsman of this book!

Among the five types of materials, Wang Xin focused on the mixed type: "In practical application, the most common type of material five is the mixed type, which can be divided into organic mixed type, inorganic mixed type, low-quality and high-density mixed type, alloy mixed type, etc. ”

The next step is to introduce the distinguishing method: "the organic mixed type has biological activity under microscopic conditions, and can be corrupted and deteriorated in a short time if it is not stored properly, the inorganic mixed type contains the microscopic characteristics of high-level elements, and often shows a uniform and orderly appearance under macroscopic conditions, and the low-quality and high-density mixed type has quite good performance: transparent, chemically inert, good sealing ability, and easy to mold and process." ”

Speaking, Wang Xin frowned: "As for the definition and identification method of alloy mixed type, there has been a debate, and the outside world generally believes that as long as more than 1% of metal elements and non-metal elements are mixed, it belongs to the alloy mixed type, but in fact, this is wrong. ”

After hesitating for a moment, Wang Xin sent the two strings of web links to Ji An and Yan Ming's minds through his divine sense: "In this string of links, I personally recommend that you look at the past from top to bottom, in turn, and you can understand the database of link one, and then you can look at link two." ”

Wang Xin focused on warning Yan Ming: "Especially you, if the foundation is not solid, don't be ambitious." ”

As for Ji An, he was still relieved.

Re-talk of the round gold hybrid.

"It is customary in the formation world that when the single metal element is greater than 11.4% and the second metal element is greater than 5.5% in the mixed type, and the mixture has the possibility of being forged, it is regarded as an alloy mixed type. ”

Wang Xin's tone was steady and continued: "One thing that needs to be noted here is that when the material only contains metal elements, it belongs to metal mutuals, and metal mutuals are not elemental, but they are pure and do not belong to mixtures. ”

"At the microscopic level, when the electronic shell structure, atomic radius and crystal type are quite different, it is easy to form metal interferants, also known as metal compounds, whose crystal types are different from its grouped metals and form new phases of their own. ”

Yan Ming's eyes were blank when he heard this, and his face was confused, like a qualified mentally retarded.

What are these?

What is a hybrid type?

What are metal interferants?

What is the electron layer structure?

It's a dead life, and the painting style of the formation tutor has changed abruptly!

He's going to kill me!

You want me to die!

It seems that he suddenly realized something.

After brushing the ground, Yan Ming turned to Ji An, his expression was focused, his heart was firm, and he said silently in his heart: "There is no way! I can only rely on you, brother!"

The same lesson, Yan Ming listened to it painfully, wanting to die, Ji An was different, he nodded again and again, his eyes lit up when he listened, and suddenly he made a light but clear "oh" sound, full of joy, energy, interest, desperate to absorb knowledge of the big sponge.

The contrast is stark.

It's like two extremes.

Seeing this scene, an idea suddenly appeared in Wang Xin's mind: "In my class, there are the smartest people and the stupidest people, and there is only one who is not smart or stupid." Is it okay to apply to the vice president? If some people can't apply, can't I just apply for one? What's more, I don't need to be particularly good. ”

The more he thought about it, the more Wang Xin felt that this thing was feasible.

As long as these three people are there, Wang Xin can intuitively understand what kind of level his teaching level is.

What's more, there are few people in the middle of the two extremes in this world.

Many of the data in the teaching evaluation are averages.

The average is not everything, at least it can represent the majority.

And if Wang Xin can teach most of the students, his position in the Taoist Academy will be considered to be initially stable.

Thinking about these things in his mind, Wang Xin kept talking: "We will talk about the knowledge points of the phantom array here for the time being, and then arrange the relevant homework." ”

As soon as the palm of his hand was flipped, there were suddenly two more swarthy things the size of a fingernail on Wang Xin's palm.

In terms of the aesthetics of normal people, the appearance of these two things in Wang Xin's hands is quite ugly, the surface is pitted, at first glance, I thought it was a non-standard sphere, but when these two things were put on Ji An and Yan Ming's hands respectively, they turned into a pool of black water stains in the blink of an eye.

Ji Ann was amazed at the tactile sensation it gave people.

When the flowing water stains trembled on Ji An's palm, Ji An only felt some fine substance quickly rubbing through his palm, as if passing through an electrostatic field that made people's hair stand on end.

What's even more bizarre is that this subtle touch only appears in the first second of the water stain shaking, and no matter how much Ji An shakes it after that, it doesn't give him such a feeling again.

The water stain is as calm as a puddle of ordinary water droplets that have been accidentally mixed with ink spots.

Wang Xin pointed to Ji An's palm and asked Ji An, "How are you feeling now?"

Ji An replied: "At the beginning, there was a feeling of electric shock, but now it is gone, only the feeling of coldness. ”

Wang Xin nodded his chin and turned to look at Yan Ming: "What about you?"

Yan Ming frowned and thought for two seconds before replying, "What do you say? It doesn't feel very good, I feel like I've touched the glass ballast, pointy, and I'm a little worried that it will cut my hand." ”

"Hmm. Wang Xin was noncommittal.

He hesitated for a few seconds, and finally withdrew the puddle of water stains from Yan Ming's hand, and handed Yan Ming an irregular sphere the size of a fingernail again with a little heartache.

It's just that this time, this sphere fell into Yan Ming's hands, and it didn't melt into liquid, but still maintained a solid state.

Just looking at Wang Xin's face, he knew that this was a good thing in Yan Ming's hand.

Ji An has seen a lot of good things, and she has no idea about it.

Yan Ming's expression was subtle.

Suddenly, a line of big words flashed in my mind:

Fools have fortune!

"Hey, hey. After getting the good things, Yan Ming suddenly laughed, and the depression of not being able to understand the knowledge points of the fifth type of materials before suddenly disappeared cleanly.

Until Wang Xin really couldn't look past it, he disliked his stupid appearance that he had never seen the market, and gave Ji An the same again.

Yan Ming's smile froze.

Is this a joy and sorrow?

But after thinking about it, it doesn't matter whether a good thing is a good thing or not, anyway, the one in his hand is also a good thing.

Thinking like this, Yan Ming laughed again.

Give the props out, Wang Xin began to explain the use of this thing: "The prop is called 'safe point', hold the palm of your hand tightly when you use it, close to the person you want to test within 180cm, if there is a person who has been in and out of the phantom array, the safety point will vibrate at the same frequency, and generate heat at the same time, within this range, the closer you get, the hotter it is, it means that you are gradually getting closer to the target." ”

Seeing that Wang Xin finished speaking, he had no intention of saying anything more.

Ji An then asked, "Then Mentor, what is the principle of the same frequency vibration?"

Yan Ming, who was about to lift his butt and leave, opened his mouth, and stopped talking.

Isn't it time to leave class after giving homework?

Why ask the principle?

If you don't say it, I'm ready to go back to meditating and sleeping.