"Big sister?" Lin Yu lay on the bed for a while, and really felt that he was so hungry that he couldn't stand it, so he ran downstairs to 101 to find Sister Li Ping, "I want to know where the cafeteria is?" ”

"The cafeteria is in ...... Forget it, I'll take you there. The eldest sister thought that Lin Yu had just come and didn't know how to go, so she was ready to take him over.

"Sister, I'll come, you can rest." At this moment, a man in a lab coat came down from upstairs.

"You're new here?" He glanced at Lin Yu, "Which group are you from?" ”

"What's the matter?" Sister Li Ping didn't want to delay his time, "You just came back and you didn't take a break, I don't care, but you can't delay the rest time, the country still needs you!" ”

"It's okay, I'm just going to the cafeteria to eat something, I'll take him with me."

"It won't bother you too much, will it?" Lin Yu asked the experimenter who came halfway.

"It's okay, it's just a friend here, don't bother." He grabbed Lin Yu and walked outside, "Eldest sister, you rest, I'll take him." ”

"You haven't said you're from that group."

"I just arrived today, and I haven't been assigned a task yet."

"Oh yes, what kind of Ph.D. are you?" He wanted to know what Lin Yu's major was, so he could speculate on the group he would be divided into.

"I studied materials and bioengineering."

"Oh, the material, that's probably the material group."

"By the way, my name is Lin Yu, I don't know what your name is?"

"My name is Wang Hong, and I am from the power group." He took Lin Yu into an alley, and there was a half-hidden door in the depths of the alley, and there was a small sign at the door, and there seemed to be some words written on it.

"This is the cafeteria?" Lin Yu expressed doubts, whose canteen is so hidden?

"It's a cafeteria."

The two of them walked in, and Lin Yu saw clearly what words were written on the small standing card - "The kitchen is heavy, and the living should not be approached." ”

"Aren't you going to the cafeteria? How did you come to the back kitchen? ”

Is this a theft? Lin Yu had a bunch of question marks in his heart.

"Harm, it's the same as before, it's no different, I've been here many times." Wang Hong led Lin Yu inside.

Entering through the small door is a hallway, with rooms on both sides of the corridor, with numbers written on them, and names on the doors, such as "Staff Lounge", "Cleaning Room", "Washroom", "Kitchenware Cleaning Room", and "Toilet".

Well? Aren't cleaning rooms, washrooms, and toilets the same thing?

Lin Yu asked Wang Hong if he had any doubts in his heart, looking at Wang Hong's eyes like a mentally retarded person, Lin Yu wanted to find a place to get in.

"Of course it's different, the cleaning room is the place to wash the kitchen utensils, the bathroom is the place to wash your hands and face before cooking, and the bathroom is the bathroom, you can't tell the difference?"

"I really don't know." The so-called knowledge is knowing, not knowing is not knowing, it is knowing, Lin Yu does not have the stubbornness of a dead duck's hard mouth.

"We're here."

The back kitchen used to be so big, the back kitchen here is very neat, and the ceiling is very clean.

Generally speaking, in a place like the kitchen, where there is a lot of smoke, there are more or less traces on the ceiling, because the floor is best cleaned, and the walls can be done with a little effort, but the ceiling cleaning is thankless.

Personnel in white chef suits move back and forth between pots, hands up and down between steam, and a crisp sound in pots and pans.

Pressure cooker, steamer, wok, all the masters perform their duties, take the plates, chopsticks, and bowls, everyone is in an orderly manner.

"Xiao Wang is here!" A master saw Wang Hong and greeted him with a smile.

"What do you want to eat today?" Or a small portion of a large plate of chicken? ”

"Thank you, uncle, I brought someone over today, a big one!"

"Okay", the work in his hand did not stop, and shouted backwards, "A large plate of chicken!" ”

"Let's go!" Wang Hong pulled Lin Yu and walked to the other side.

"Uh...... I didn't even say what I ate. ”

"I'll order it for you, big plate chicken, the big plate chicken here is very authentic, feel free to eat."

"No, I ......"

"Oh, don't worry about it, I'm very familiar with them, and they'll send them to us later."

Lin Yu felt a little powerless to complain, why do I want to eat a large plate of chicken with you, but I didn't say anything after seeing his kindness.

Come to a room with a table and chairs attached to the wall.

"Hey, do you know about additive manufacturing in foreign countries?" As soon as Wang Hong sat down, he couldn't wait to start a topic with Lin Yu.

Lin Yu, who was a little inexplicable all the way, didn't know what he wanted to do.

"I don't know."

"You ...... all of this That's right, you're in the material. Wang Hong seemed to have just reacted, "Then I'll tell you a good time." ”

"I don't want to ...... that," Lin Yugang wanted to refuse.

"No, you want to." Wang Hong directly blocked Lin Yu's unfinished words, "I'll tell you!" ”

"Do you know that the space engine, as the heart of the launch vehicle, is also an important part of determining the ability to enter space? Well, you definitely know this, after all, everyone who knows about aerospace knows. Wang Hong talked to himself, and he didn't care about Lin Yu.

"In order to meet the rapid development of space technology, aerospace power products are developing in the direction of integration, lightweight and high reliability on the one hand; On the other hand, in order to adapt to the new trend of commercial competition, it is necessary to significantly reduce the engine development cycle and cost. ”

"As long as the complex integral components of the space engine are manufactured through the use of additive manufacturing technology, the development cost and cycle can be reduced."

"This is what I want to do, as long as I get this thing done, we Huaxia can catch up with foreigners in the process of rocket commercialization."

"Do you understand?" After Wang Hong finished speaking, he stared at Lin Yu as if his eyes were shining.

Can I say I don't understand? Lin Yu wanted to ask this very much, but for the sake of Wang Hong being the person he had just met, he put up with it this time.

"I understand." As soon as Lin Yu finished speaking, Wang Hong shook his head, "No, you don't understand." ”

This is said that Lin Yu wants to beat people a little.

I put up with it.

"Let me tell you, recently, NASA in the United States has carried out structural optimization design research for space engine injectors, which not only realizes the integrated design of the injector, but also carries out the design for additive manufacturing for the local characteristic structure of the injector, and realizes the self-supporting optimization design of the internal cantilever part, which solves the problem that the internal support cannot be removed after the integrated design of the injector, and finally realizes the integration of more than 100 parts into 2 parts, and the development cycle is shortened from 6 months to 1 month."

"There is also Hyperganic, a software company in Hans, who has developed a voxel-level design software for additive manufacturing, which can realize the digital evolution of the thrust chamber modeling process of rocket engines through algorithms, and hundreds of variant models will be generated during the evolution process, and the algorithms will physically simulate and verify these models, screen out the most suitable models, and finally create a bionic structural thrust chamber with structure-function integration."