290 Who has learned this?(2/2)
"???" He Zhongrui was stunned, and then glanced at the information table, "You...you just read two pages and you think you have no problem?"
"I've read a lot." Li Zheng explained bravely, "It's just that I have been exposed to a lot of knowledge before, so I can jump to it if I can."
"No..." He Zhongrui scratched his scalp and said, "Can you tell me where to learn about aerospace engines?"
Li Zheng didn't know what to say. He just raised his eyebrows and said, "Okay, Brother Rui, let's try some big work first."
Seeing his playful smile, He Zhongrui was a little angry: "Li Zheng, how capable you are of doing great things, in your current situation, do I dare to give you a job?"
"Ah, this..." Li Zheng was in trouble.
He didn't blame He Zhongrui. According to common sense, there was indeed something wrong with him.
But how to explain this...
At this time, a sneer suddenly came.
"Test him." Lin Yujing sat in front of the computer, scanning the documents and said, "Just test him casually."
"Wonderful." Li Zheng glared and hooked his hand at He Zhongrui again, "Test me."
"..." He Zhongrui was naturally too lazy to waste this time, let alone being sleepy. However, considering the complexity of the identities of these two people, he finally nodded, "Li Zheng, work is really tight now. If you answer
If you don’t come up, you can either go back and continue studying, or you can do documentation work with Xiao Lin, at least it won’t increase our burden.”
"Definitely." Li Zheng's expression gradually became serious, "Teacher He, just ask the difficult person directly to save time."
"You're asking a question." Lin Yujing shouted from the side.
"Haha..." He Zhongrui smiled bitterly, "I really want to give you face... but since Xiao Lin said so... I won't be polite."
"please……"
He Zhongrui rubbed his forehead and thought.
Several people in the office also peeked over crazily.
It's just at the high school level, but he is running wild in the fields of master's and doctoral degrees.
It's time to show the dignity of a top student, team leader.
Let Lin Yujing also take a good look at the level of the test group.
The five words "aerospace engineer" are not called for nothing.
As for He Zhongrui, although he was asked to answer difficult questions, he was a doctor-level being after all. As soon as he came up, he would ask sophisticated questions that the other party would definitely not be able to answer. It was inevitable that he would bully the juniors.
On the other hand, he also wanted to take the opportunity to examine Li Zheng's level.
Therefore, he asked a fair question.
"Major Failure Modes of Pump Engines."
Li Zheng replied immediately.
"There are 12 items in the data summary."
"1. The joint is leaking."
"2, Starter abnormality."
"3. Hot gas leakage."
…
"12, the valve is working abnormally."
He Zhongrui stared slightly, then asked: "Where do each fault mode occur?"
"Leakage, corresponding joints, welds, cracks, rotating seals..."
…
"Foreign matter, corresponding to the injector, turbine pump, and airflow hole."
He Zhongrui stared at Li Zheng for a long time with a grim face before asking: "Have you carried it before?"
Li Zheng had no choice but to smile back.
Who the hell has nothing to do with carrying this thing?
"You don't need to memorize this." Li Zheng explained, "After fully understanding the structural components of the engine, if you propose a fault, you can naturally analyze the possible location where it occurred. Just understand it."
Not only He Zhongrui, but also the other people who were taking crazy peeks were a little embarrassed.
Damn it, I just have to memorize it, I don’t understand it.
They still don’t know that Li Zheng, who has gone through the test of two competitions and a series of mental tempering...
The brain has already become strange.
"..." He Zhongrui hesitated for a moment and then asked, "Please list several main fault characteristic value parameters."
"Flow, pressure thrust, temperature, vibration, rotation speed, stress, torque..."
"That's enough." He Zhongrui raised his hand and said, "Tell me briefly how to choose the eigenvalues."
"Select n characteristic parameters xk from the existing n characteristic parameters xi, and form an optimal feature subset under the meaning of a certain index function j. Among all possible alternative feature values..."
He Zhongrui interrupted Li Zheng again and asked again: "What is awssa?"
This time Li Zheng thought for a while before saying: "Adaptive weighted sum averaging algorithm, one of the algorithms for analyzing and predicting faults based on engine characteristic signals."
He Zhongrui suddenly turned around, picked up the pen and paper on the table, and wrote two lines of calculations that were absolutely impossible for people with more than 60% of his hair volume to understand.
"The above is the mean value of the detection parameters, and the bottom is the variance. Can you calculate the Grubbs statistic?"
"Wait a minute..." Li Zheng took the pen and thought for a while, and wrote down a formula that although it was simple, it must be understood by people within 70% of the volume. Then he took out his calculator and said, "Teacher
You go and rest for a while, and I'll do the math slowly."
"No need..." He Zhongrui held down Li Zheng's arm, his whole face showing an innocence that doubted life, "Why do you even understand fuzzy mathematics?!"
"It's just..." Li Zheng said hesitantly, "I understand a little bit."
"..." He Zhongrui looked at Li Zheng, as if the word "why" was about to pop out of his eyes.
After a long time, he let go of his hand and said to a person in the back row.
"Teach him the process of analyzing engine test data."
"……good……"
He Zhongrui looked at Li Zheng, then at a table of information, and finally asked: "Why..."
Suddenly there was another chuckle.
Chapter completed!