After a formula was derived, Xiao Yizhan's vision of Shen Yiyi changed. He couldn't contain the excitement in his heart right now. What a genius!

After making up his mind, Xiao Yizhan made a request to Shen Yiyi with a pleasant face: "Shen Yiyi, do you see if you can find a few more pieces of paper and deduce the remaining formulas?" Just like this first formula, the derivation process of the other formulas is also written down, and we will refer to it in detail. ”

Although it was a polite request, in terms of Mr. Xiao's status in the aviation industry, it was tantamount to a request that Shen Yiyi had to meet.

Shen Yiyi actually didn't plan to hide his secrets in his heart. She herself knows the meaning of these formulas. If the results of these formulas were comparable to those calculated by large commercial computers, then in 1994, when our own country did not yet have the same large electronic computers as those of later generations, these formulas would be equivalent to large electronic computers. If our weapons researchers can master such useful tools for the development of our own various aircraft, then such an effect will be obvious for an increase in design accuracy, as well as an increase in design efficiency. Whether it is Shen Yiyi in his previous life, or Shen Yiyi, who is now a soldier's son, there is no reason not to help his country in this regard.

Therefore, of course, Shen Yiyi easily agreed.

"Okay, Xiao Lao, let's look at the second formula. This formula actually comes from the empirical formula that you and I are familiar with. In fact, there is also a dimensionless quantity here, that is, the participation of Strauhar numbers......" Shen Yiyi continued her work of derivation and explanation. Luo Yu also continued to be confused, and Old Man Xiao Yizhan still had his eyes getting brighter and brighter the more he listened. Every step of Shen Yiyi's derivation. In Old Man Xiao's eyes, it is so incredible, but when you think about it carefully, it is so logical. Even the simplification of certain assumptions can be described as subtle. Listening to Shen Yiyi's clear and eloquent explanation, Xiao Yizhan now feels that his grandson has really brought him a young but weighty little genius. Now in his heart. The weight of Shen Yiyi's person has far exceeded the formulas that he regarded as treasures before, and even more important than the so-called book he had expected and expected before.

This kind of derivation process is actually an improvement for Shen Yiyi himself. During this period of time, even though she participated in the competition class and maintained the leading results, the knowledge system on which she relied for these achievements was still in the field of elementary mathematics or classical physics. If knowledge is not used for a long time, even if it is not forgotten. At the very least, the impression will be indifferent. It has been a long time since Shen Yiyi has had such an opportunity to review and deepen her understanding of advanced mathematics and modern physics. Usually there is no such opportunity, but now, because of the arrival of Luo Yu and Xiao Yizhan, she has the opportunity to use such formulas to connect the knowledge points of mathematics and physics that she can only come into contact with in higher education that she can't use freely. In her heart, she was glad to have such an opportunity.

Therefore, one spoke happily and the other listened happily, only Luo Yu had no concept of some of the knowledge or principles that Shen Yiyi said. Sometimes I can only look at Shen Yiyi, and then look back at my grandfather. Although he couldn't understand it, Luo Yu believed that if his grandfather hadn't mentioned that Shen Yiyi was wrong. Then Shen Yiyi must be right. He deeply felt that his inexplicable sense of superiority was unacceptable. The ocean of knowledge was so boundless that when he was like a frog at the bottom of a well satisfied with the grasp of knowledge in front of him. There is such a girl, who has already advanced the boundaries of her knowledge to a height that she never imagined. Thereby. Luo Yu also secretly made up his mind to read more books when he went back. Knowledge points that I don't understand today. In the future, I must ask my grandfather, and I must master these knowledge points.

When the participants who are engaged in one thing are focused, time passes very quickly. Unconsciously, three or four hours passed, but no one noticed the handle of the door, whether it was Shen Yiyi or Old Man Xiao's grandfather and grandson. Then the door opened, and a figure appeared.

Shen Yiyi was finally alarmed by the sound of the door opening. She looked up at the door and excitedly exclaimed, "Mom, you're back." ”

Mother Shen stood at the door with a satchel in one hand and a vegetable basket in the other, looking at the old and young in addition to her daughter in some surprise. Of course, she will not be as hot-tempered as her husband, but she has not come back to her senses for a while.

Xiao Yizhan and Luo Yu still know how to be guests and how to be a guest. The two of them got up early. Shen Yiyi also stood up, walked to the door, took the vegetable basket from his mother's hand, and introduced his mother while holding his mother: "Mom, this is Xiao Yizhan Xiao's senior." Mr. Xiao is a well-known expert in China's aircraft industry. Next to him is his grandson, named Luo Yu. We met last time at a physics competition training lecture in the city. ”

Xiao Yizhan also continued: "Shen Yiyi's mother, hello, I took the liberty of coming to your house today and causing you trouble, I'm sorry." Luo Yu also seemed to be well-behaved and said, "Hello, Auntie! ”

Shen's mother Yang Rui was also born in a scholarly family, although she was surprised by her daughter's wide range of friends now, but her good upbringing still made her warmly entertain the guests at the first time: "Xiao Lao, and this classmate Luo, welcome you to my house as a guest." In this way, you sit down and pour some tea for the guests one by one. Don't you kid look at the tea on the table when it's cold? ”

Of course, Xiao Yizhan and Luo Yu didn't even say no, but at the insistence of Shen's mother, the two could only sit down. Shen Yiyi came to the kitchen with his mother with a basket.

In the kitchen, as Shen Yiyi guessed, Shen's mother actually wanted to understand what was going on in this house. Shen's mother asked Shen Yiyi to put down the vegetable basket, put down the satchel herself, and asked her daughter: "Yiyi, why don't you invite the guests back without telling your mother." What time is it, and my mother hasn't bought more groceries today, what should I do? ”

Shen Yiyi leaned on his mother first, sprinkled his coquettishness, and was beaten by Shen's mother in turn: "Hurry up, the guests are still outside, what should I do?" ”

Shen Yiyi straightened up and said to his mother, "Mom, they just came to ask me about some questions." Now that I'm done, I'm going back. You don't have to worry, they won't eat here. ”

Shen's mother glanced at her daughter disapprovingly and said, "Nonsense." Is that how your mom taught you? I don't understand the basic principles of dealing with people. At this point, even if the guest wants to leave, the host should be sure to leave the guest behind. Outrageous! ”

Shen Yiyi smiled and didn't speak. Shen's mother looked at her daughter helplessly: "In this way, call your dad or your little viagra in a while, and ask your dad to go to the small canteen to get a few dishes to take home when you come back." After thinking about it, he said, "Forget it, I'll call, and you can accompany the guests." People are old experts, don't give me light bones, be polite, know the way? ”

Shen Yiyi deliberately dragged out his tone and said, "It's good--Zhilu has ——— said," and Shi Shiran carried the hot water kettle outside to add water to the two guests. Mother Shen looked at her daughter's figure walking out of the kitchen, smiled and shook her head.

After returning to the living room, Shen Yiyi first refilled the tea for the guests, and then continued to complete her unfinished formula deduction. For Xiao Lao, who was born as a scholar, as long as he saw new knowledge, he immediately immersed himself in it. It's just that this time Luo Yu was a little restless. He looked at the time, it was almost dinner, but none of the wings he had chosen today had been taken out to offer treasures. What can I do? He remembered that Shen Yiyi obviously said that he would start determining a wing plan immediately when he assigned the task last time, but if he was not sure today, wouldn't the purpose of his coming here not be completed?

Therefore, with this in mind, although he didn't understand it a little, he still continued to pay attention to the communication between Shen Yiyi and his grandfather, Old Man Xiao. Finally seeing that Shen Yiyi finally deduced the last formula, Luo Yu couldn't help it, and asked, "That...... Shen Yiyi...... Do you want to see my airfoil selection today? ”

When Shen Yiyi heard Luo Yu's question, he finally breathed a sigh of relief in his heart, and said in his heart, you finally asked this question. You have to know how long Shen Dao and Shen Yi have been waiting for Luo Yu's question. She has been deducing formulas, her brain has been running at high speed, she has never rested, and she is really a little tired. At the beginning, of course, it was rare to have such an opportunity to change channels to think about problems, and there was a little excitement, but after a long time, the brain was a little unbearable for such a difficult activity, and Shen Yiyi began to hope that Luo Yu could interject to slow down other things. But the problem is that Luo Yu has always been silent, and he looks very interested in listening, which makes Shen Yiyi really secretly complain.

Regarding Luo Yu's question, Shen Yiyi looked at Old Man Xiao with some embarrassment: "Uh...... Well...... this."

Old man Xiao Yizhan looked at Shen Yiyi and his grandson like this, and smiled knowingly: "Ha Luha...... Okay, Shen Yiyi, these formulas of yours have also been explained in great detail. In this way, I will take these pieces of your paper back today, and I will take a good look at them. It's not too early for you to see today, so I think the two of us will go back first. I'll come back to you tomorrow, do you think it's convenient? ”

Shen Yiyi heard it one by one, and hurriedly stopped it and said, "Alas, don't." Old Xiao, you see, Luo Yu and I have made an appointment last time, and when we meet again, we will immediately select the applicable airfoil according to the node. If you don't choose it today, it will be tantamount to not implementing the plan according to the plan, and it won't work. Besides, it's time to eat, and if I don't leave you behind, my mother will have to scold me. So you better stay and eat before you leave. Luo Yu, take out your homework! (To be continued......)

PS: Today's chapter code gives me a headache. Caven is amazing. But it was finally completed in time, and everyone supported it strongly!