I heard that Mr. Xiao Yizhan came to "inspect" the special slide rule he made, and the two girls were quite proud, but they were faintly apprehensive. In the past few days, they and Fang Bing have indeed spent a lot of effort on this thing. In later generations, these things could be produced at once by simply entering the computer and typing a few commands, but in this era, they had to rely on people's heavy labor. Fortunately, the three of them also have electronic calculators to help, but these labors that are very repetitive and require a lot of patience are really very hard and difficult work in Shen Yiyi's eyes. Shen Yiyi asked himself, if he wants to do such a job, it is not that he can't sit still, but it may take a long time to do psychological construction before the work starts. But in any case, Shen Yiyi would like to pay high tribute to the young people who dare and are willing to take over the work done by computers.

Of course, Lin Xue and Liu Min would not have the same thoughts as Shen Yiyi. In fact, it may be supported by a lofty goal, the two of them, even including Cheng Ying and Fang Bing, their lives in the past few days have been quite fulfilling. Whenever they were dizzy and a little confused, they only needed to imagine the scene when their division could get the first place in the military region's exercise after receiving this equipment, and they were full of enthusiasm again. Indeed, thanks to their efforts, the whole team has achieved very fruitful results in the past few days, at least in terms of calculations in this project. Like all children who have just done a glorious thing, to be able to have a famous old expert at this moment. I was able to come to my home and say to myself that I wanted to see it. Or to "review" the results of their work, how can they not make these two girls feel honored. Excited about it? But at the same time, they will inevitably be a little worried, will he find any serious problems when his work results are tested by Old Man Xiao for a while? At that time, it is a small matter to lose face, but if you have to recalculate because of this, resulting in the delay of the project schedule, won't you drag the whole small team back?

With a complicated mood, he carefully took out the slide rule and handed it to Old Man Xiao. this era. Of course, there won't be any computer typesetting and printers or anything like that. Therefore, where the ruler needs to be marked or labeled, Lin Xue or Liu Min carefully traced the words or numbers in Song style. Shen Yiyi looked a little like the kung fu of professional depictors in later generations.

Unlike Luo Yu's feeling of looking at the diorama as if he didn't understand, Old Man Xiao looked at this calculation tool that was basically filled with marks, but his feelings were very complicated. In the era before computers, those engineers who needed to perform calculations had two main tools of calculation: perforated computers and various slide rules. So he's no stranger to slide rules. However, this is the first time that a slide rule for finite element or boundary element calculations has been seen. Of course, in theory, just like logarithmic tables, the slide rule is nothing more than a kind of human design to replace complicated calculations with another relatively simple calculation method or process through equivalent single-value transformation. After getting the result, it is just a tool that produces the most coarse result through inverse transformation. However, due to the peculiarities of finite element or boundary element calculations, people have given up the effort to use a slide rule to calculate such calculations, and directly threw these calculations to the computer. However, due to the bottleneck of computer performance in China, both in terms of time and efficiency. Even in terms of computing power, it cannot meet the requirements of engineering design. Therefore, machine computing has become a bottleneck in the design of China's aviation aircraft. But there is such a calculation gadget in front of me that can be said to be a different way. But it made Old Man Xiao's eyes light up. Looking at the dense number marks on the tools, Xiao Lao seemed to see these teenagers and girls in the mood for love. The figure who is immersed in calculations together during the day and night seems to see that once such a slide rule is promoted. In the Shenfei design room, the sparks generated after the development of the new model are applied.

Lin Xue and the others looked at Old Man Xiao nervously. The latter was carefully studying the various modules of the slide rule, guessing in mind the correct steps to use the ruler. Sometimes, it's like when you buy a new home appliance that you can't use, or if you don't use it, the usefulness of the new appliance will be greatly reduced. Shen Yi looked at Xiao Yizhan looking at the ruler, but didn't speak, and guessed in his heart that this old man might be thinking about something, so he opened his mouth and said to Lin Xue: "Xiaoxue, tell the old-timers how to use the slide rule." ”

As soon as Shen Yiyi opened his mouth, Lin Xue also took advantage of the situation to relieve the tension just now and began to fulfill the friendship of the landlord.

"Elder Xiao, let me introduce you to it. This slide rule, like any other slide rule, is actually an input...... Plus here the type of operation you want to do...... Swipe this ...... Align...... You see, we got this result......"

Lin Xue introduced it carefully step by step, and Xiao Yizhan and even Luo Yu also listened very carefully, carefully watching Lin Xue's operation of the slide rule. And Old Man Xiao listened to the explanation while comparing it with the usage method he was thinking in his heart. If it happens to be right, the old man will be very happy in his heart; If there is a difference in one step, the old man will not be disappointed, and he will be able to memorize the main points of use. After listening to Lin Xue's explanation, the old man also happened to remember how to use this ruler.

Old Man Xiao nodded, affirmed the role of this ruler, and said to Shen Yiyi and the three girls: "This ruler is still good, although the steps used are a little troublesome, but for coping with a large number of calculations, if there is no problem with the scales and parameters on the above you designed, it should still be applicable." However, if you really want to use it, you have to verify it. ”

Shen Yiyi smiled. She and Lin Xue glanced at each other, and the two smart girls vaguely guessed what the old man meant by saying this. It was Lin Xue who took the initiative to propose: "Old Xiao, we also have such an idea, after this ruler is made, we haven't had a chance to take an arithmetic problem to verify it." If you don't come to the problem when you do it, let's verify the usability and accuracy of this ruler here. She discussed the progress of this topic with Shen Yiyi a lot during this time, so she also infected the few nouns that often popped up in Shen Yiyi's mouth.

The old man Xiao Yizhan was satisfied in his heart, and said that this girl is good, promising, smart, and able to speak, which is much more pleasing to the eye than the little fox-like Shen Yiyi. By the way, she looks pretty good, and you can observe it in the future to see if it is possible to be your granddaughter-in-law. Thinking about it, the old man glared at Shen Yiyi one by one. This little girl doesn't know how to coax my old man, so she dares to be with her genius head, when will she ...... Alas, forget it, there's really no way to do anything with her. I still have to figure out how to make her best to participate in the project she is working on.

At that moment, the phone on the desk rang. Lin Xue picked up the phone. It turned out to be a call from the doorman. I saw Lin Xue say into the phone, please let him in. After hanging up the phone, Lin Xue explained to everyone: "It's Fang Bing, he is also here today." ”

Shen Yi nodded a little to indicate that he knew it. It was Old Man Xiao who said "um" and said, "It's that kid from the Xiaofang family." Luo Yu was very happy to hear that his little friend was coming, and suddenly he had a feeling that he was no longer alone. He said excitedly to his grandfather: "Yes, grandfather, Fang Bing, he and Lin Xue and the others calculated this slide rule." ”

After a while, Fang Bing arrived. He was a little surprised when he saw Old Man Xiao, and then he saluted in a proper manner: "Hello Grandpa Xiao." ”

Xiao Yizhan nodded and said, "Hello." Fang Bing, I heard that you have performed well in this project in the past few days, and you must continue to work hard and maintain it in the future. ”

Shen Yiyi listened to the belly squirt one by one, and he was really full of officialdom. Fang Bing honestly agreed.

Shen Yiyi saw that the people were almost here, and thought that this was just an opportunity, so he made a look at Luo Yu and asked him to take out the two plans he had set yesterday.

Shen Yiyi said to everyone: "In this way, the people here are basically here today, so I'll talk about it while the iron is hot." At this time, Luo Yu had already spread out the pieces of paper from yesterday on the table according to Shen Yiyi's hints.

Shen Yiyi pointed to the pieces of paper on the table and said, "Luo Yu has been working very hard these days, but it is also very fruitful. Of course, everyone has worked hard these days, and they have all come up with results. But Luo Yu's achievement means that the work of Lin Xue's group can be officially carried out next. With the participation and guidance of Mr. Xiao's seniors, we have selected these two wings from the seven wings initially selected by Luo Yu last night. ”

"Next, Lin Xue, Liu Min and Fang Bing, your task is to check the lift and strength of these two wings with the slide rule that you have already made. Particular attention should be paid to the conditions under the check-in limits. Shen Yiyi arranged the next work to Lin Xue and them in detail, the things that need to be paid attention to, and some parameters required for calculation were also told to them. Lin Xue and the others listened very carefully and nodded again and again. Liu Min even took out a small notebook and wrote down what Shen Yiyi said.

Old Man Xiao looked at Shen Yiyi directing Ruoding here, nodded again and again, and was even more determined to find a way to pull this girl into his own major. A clever and capable assistant was too important for him, an old man who was already on his way to meet Marx. And the importance of a clear-minded, knowledgeable, and flexible researcher to the progress of science and technology in our republic cannot be overemphasized. (To be continued......)

PS: One more sends. Without further ado, continue to code words and strive to send them out today. Everyone is trying to subscribe to the polls.