Liu Chen was a little dumbfounded, "Professor Zhang, where are you pulling me to?"

Qiao Xiu was not happy anymore, she finally received someone, why was she still cut off halfway, and hurriedly said: "Hey, professor, Liu Chen is a guest I invited, you have to go home with me, you are too unsophisticated." Pen Fun Pavilion wWw. ｂiquge。 ｉｎfo”

Professor Zhang's eyes widened, "You girl is too ignorant, she contributes to the country and is informal." ”

"That's not good, don't buckle your hat so big, Liu Chen must go home with me." Qiao Xiu didn't give an inch.

Nuo Min pouted and grabbed Liu Chen's clothes, and said, "No, Liu Chen is a guest of our family, he should go back to my house, and he will also learn to ride a horse at my house and tutor me in his homework." ”

Qiao Xiu stopped doing it, "Sister Minmin, what you said is not right, Liu Chen was kicked out by your mother, why are you embarrassed to let him go back, our people on the grassland can't do this kind of thing." ”

Nuo Min's face turned red, he glanced at Liu Chen apologetically, and said hurriedly, "That's because of a misunderstanding, not my mother's intention, my mother asked me to call Liu Chen back for dinner." ”

"I didn't come in person, I didn't have any sincerity at all, how could Liu Chen go back with you. ”

Qiao Xiu grabbed Liu Chen and didn't let go, and Nuo Min also grabbed his clothes and didn't let each other go.

Zhang Zheng pulled Liu Chen's arm, feeling that this was very weird.

Looking at the two girls' arguing, he couldn't interject.

"Sister Xiuxiu, Liu Chen just can't go back with you anyway. ”

"Sister Minmin, Liu Chen came out of your house and got into my car, he is my person, so he has to go back with me. ”

"Why is it your person? or mine, you call him and see if he ignores it. ”

"You scream and see if he ignores you?"

"Liu Chen!" Nuo Min huffed.

"Liu Chen. "Qiao Xiu is sweet and greasy.

Professor Zhang was confused, and said in his heart, young man, what's the matter with you, what are you doing with the two girls.

Look left and right, the two girls are eyeing each other. stared straight ahead, making Liu Chen a little embarrassed, "Two, don't quarrel." ”

Wow. Ulanya, Nudo, and Nuoda came over on horseback, but they relieved Liu Chen.

Seeing Liu Chen, Wulanya was not very embarrassed, and Qiao Xiu knew that it was not good when she saw that this big family was here. Pulling Liu Chen to get into the car.

Ulanya sincerely apologized to Liu Chen, but she was a little at a loss.

"Brother, after you left, my mother regretted it very much, so you can go back with us. ”

Noda said.

Noldor also knew that his wife blamed herself in her heart, and said: "Little brother, our family is sorry for you, and I ask you to forgive me, and the two children still want you to bother more, this kindness." I took it to heart. ”

Qiao Xiu looked at Liu Chen pitifully, "Come back with me." ”

Liu Chen smiled and said, "Sister Qiao Xiu, thank you for coming to me, Nuo Min's homework hasn't been tutored yet, wait a few days, I'll go to you again, okay?"

The matter has come to this point, and I can still do this, so I can only agree, and I am secretly annoyed.

The two girls finally finished fighting. Professor Zhang rolled his eyes and said with a smile: "Liu Chen, wherever you go, I will go." Anyway, it's just a matter of which side is in charge of the rice. ”

Nuoda smiled: "Absolutely no problem, you can roast the whole sheep." ”

Liu Chen and Professor Zhang followed back to the ranch of the Nuojia family, and Ulanya was ashamed to please Liu Chen, so she had to insist on giving up the big bag she lived in for him to live in, but she couldn't refuse, and she started to pack it up by herself. Liu Chen wanted to refuse, but Nuo Min pulled him aside and chattered.

Professor Zhang was in such a hurry that he couldn't care about the intimate conversation between the young men and women, so he rushed over to be a big light bulb, and he was full of questions, unstable and unhappy.

"Boy, who the hell are you?"

Nuo Min said with great pride: "Mr. Professor, Liu Chen is the champion of Hui Province this year, he was admitted to Jianghai University, and he also tutored the whole class into an undergraduate. ”

Zhang Zhengyi waved his hand and said: "I don't care about these, a student, no matter how high the score is, there is nothing to show off, Liu Chen, I want to know why you understand series resonant soft switch technology, how much do you know? To what extent, I urgently need to discuss with you now." ”

A student is really nothing big in the eyes of a big professor.

"Professor Zhang, I am very interested in electrical, I studied a lot of college content by myself in high school, such as "Power Electronics Technology", "Power Drag and Control Basics", "Control Principle", etc., heh, mainly to better fiddle with electrical equipment, control the motor to make a small model to play, the theoretical aspect is just swallowing dates. ”

Tell a little lie, otherwise a high school graduate knows so much, it's too shocking.

I see, Zhang Zheng nodded.

The little girl next to her completely became a little fan, and Nuo Min cheered: "Liu Chen, you are so powerful, you even know the knowledge in college, and the professors can't compare to you." ”

Just say this in front of other professors, okay? The little girl is too sincere.

Zhang Zheng's old face flushed, there was no way, people were indeed better than him, he had lost someone once in the hospital, and he didn't care about the second time, and said with a smile: "Yes, I also want to ask for advice, Confucius said, threesome, there must be my teacher, you little girl, maybe there is something I need to ask for." ”

Nuo Min said: "I am very good at horseback riding, do you want to learn?"

The professor said in his heart, I just make an analogy, find a step for yourself, who really wants to learn from you a wild girl on the grassland, I am a professor, I will learn what to ride a horse.

"Oh, that's not necessary. ”

"It's very fun, Liu Chen will learn from me, in this regard, I am his teacher. ”

Ulanya was preparing a sumptuous meal, and when she heard her daughter say this, she reprimanded fiercely with a straight face: "Shut up, it's no big or small, what is it to ride a horse, a three-year-old child on the grassland will, you have to respect Teacher Liu Chen, call the teacher, there is no politeness at all, how do I usually teach you?"

"Teacher Liu Chen, I'm really sorry, Nuo Min is used to it since he was a child, and he doesn't know how to count etiquette. ”

This politeness made Liu Chen goosebumps.

"Auntie, don't get in the way, I'm still the same age as Nomin, it's good to talk like this. ”

Nomin stuck out her tongue.

Ulanya still glared at her fiercely, she wanted to study at the beginning, studying in college was too sacred in the hearts of people in her time, she had lived on the edge of the grassland for many years, her thoughts had not changed at all, and she had great admiration and respect for intellectuals, especially the professors who came to Liu Chen, you can imagine how powerful this young man is.

Zhang Zheng couldn't wait to pull Liu Chen to sit down, and Nuo Min obediently poured milk tea, which was fragrant and fragrant.

"Liu Chen, the topology of the series resonant soft switch, the frequency is fixed when the resonant current crosses the zero point, it is a discrete way, after the transformer is boosted, the output voltage fluctuation is too large, have you thought about this problem?"

"Because there are only three modes, the control is too rough, and there will indeed be fluctuations, and too many fluctuations will not be too big. ”

If the switching frequency is 10k, I roughly calculate that the fluctuation will be more than 5%. ”

"10k? That's far from enough, the switching frequency of this control mode is at least 100kHz or more, and the complete elimination of switching losses is for high frequency, and the frequency of 10k does not need to use this structure. ”

Ahh (To be continued.) )