Chapter 120 This is probably a secret marriage! (33, plus more)
The so-called semi-ballistic effect is that when a spacecraft enters the atmosphere at the second cosmic speed, it uses the difference in air density between the atmosphere and near-Earth space to generate a strong aerodynamic lift, which ejects the spacecraft out of the atmosphere. Then it re-enters the atmosphere under the influence of the Earth's gravity.

But to achieve a semi-ballistic effect in reality is much more difficult than most people imagine.
This places an indescribable demand on the accuracy of the angle of attack. If the angle of attack is too small, the aircraft will fly far away. If the angle of attack is too large, the aircraft may crash directly. Therefore, control technology is particularly critical. Of course, Chen Xiaoxin does not need to think so much, because it is only a theoretical process and only needs to consider the physical meaning.

As for the physical meaning, it is naturally the equation of a parabolic curve, in which the angle and speed at the first re-entry determine the angle and speed at the time of ejection, and this also determines the distance of the second exoatmospheric ballistic flight and the angle and speed of the second re-entry.

Wu Tao looked at him in amazement. Looking at Chen Xiaoxin who was calculating the angle of attack, he was extremely shocked at this moment. Although it was just a theoretical equation and everything was based on perfect conditions, it was so difficult that most of the students from the Department of Physics of Fudan University would probably be unable to solve it.

The result was totally unexpected. The high school student in front of me actually said that he could figure it out. The key point was that he had already picked up the pen to calculate, and he calculated very quickly, as if he knew the whole process clearly.

"Help me to deduce this set of equations." Chen Xiaoxin did not let his 'Wang Yuyan' idle and directly gave part of the task to her.

Yan Xiaoxi, who was a little bored, suddenly felt a sweet feeling deep in her heart. She silently helped him derive the set of equations on paper. In fact, the beautiful and smart girl liked to do the problems with him and liked the feeling of fighting side by side with him.

Husband and wife team?
Maybe. Anyway, I only recognize him.

With the love from someone, Yan Xiaoxi's speed has also been greatly improved.

"Teacher Tian?"

"Do you understand?"

Faced with the densely packed equations and the formulas with almost no numbers, the principal of No. 2 Middle School was a little confused at this moment. He glanced at Tian Hui beside him and asked in a low voice: "It feels like the teachers in our school are completely unable to teach."

Is it the teacher from No. 2 Middle School who teaches these two people?

These two people are almost the same as the teachers of No. 2 Middle School!

Tian Hui shook her head awkwardly and answered cautiously: "It is true that they cannot teach. On the contrary, the two of them can teach the teachers of No. 2 Middle School."

The principal smiled bitterly, and then secretly glanced at the director and professor of the Physics Department of Fudan University. Seeing their expressions, full of sudden fear, he knew how much of a shock the twin stars of No. 2 Middle School had brought to them.

think about it too
Chen Xiaoxin and Yan Xiaoxi are considered to be the strongest students in the history of No. 2 Middle School, especially Chen Xiaoxin. Compared to the gossiped transfer student Yan Xiaoxi, Chen Xiaoxin is a serious No. 2 Middle School student from the first to the third year of high school, and his own experience is also very legendary. He endured two years of hardship and suddenly rose in the last year. This is simply the most perfect counterattack script.

"Teacher Tian"

"Don't control them too tightly in the future." The principal said earnestly, "Let them go as much as possible."

Tube?
How dare I interfere!
The only thing left is to worship the two of them.

Teacher Tian smiled bitterly and said helplessly: "I have never managed them and I dare not manage them. If I push them too hard, it will cause great losses to the school. But then again, Chen Xiaoxin and Yan Xiaoxi are indeed worry-free."

"There's no need to talk about Yan Xiaoxi. She stays in the classroom reading all day long. Chen Xiaoxin scored 743 points in the joint entrance examination, but he still studies hard in class. All the teachers mentioned this to me. They were so touched and happy. Their enthusiasm in class was much higher." Tian Hui answered seriously.

Hearing what Teacher Tian said, the principal sighed and said, "I almost turned him away at the beginning. I am a little scared when I think about it."

Tian Hui also had a face full of shame. Since Chen Xiaoxin walked through the door to No. 2 Middle School, and was forced into Class 2, she had hardly taken care of him and simply treated him as a poor student. As a result, he relied on his own efforts and ambition to jump to the second place in the city, only two points away from the first place.

I am so ashamed!
at the same time,

Chen Xiaoxin's description of the semi-ballistic equation was almost coming to the end, and seeing this, the father and son Wu, older and younger, felt extremely depressed and uncomfortable. They couldn't be happy at all, and even felt a deep despair, a hysterical and helpless despair.

Two peerless geniuses are right in front of him, but they don't belong to him. It is said that there are many good horses, but it is difficult to find a good horse trainer. However, the reality is not so. In fact, there are good horse trainers everywhere, but there are no good Arabian horses.

Now we have finally found two Arabian horses, but it turns out that the Arabian horses don't care about Bole at all.

At this time, Chen Xiaoxin was already sorting out the equations, but at the moment he felt a little melancholy and bitter. Was it over like this? In fact, he could do better!

quickly
Chen Xiaoxin finished all the calculations, but there was not a trace of joy in his heart. Only endless emptiness and melancholy remained. Just like all men, there is always a period of time when the soul is sublimated after the end.

Yan Xiaoxi: (￢＿￢) peek
It starts again!

It starts again!

Can you be normal?
The beautiful girl curled her lips and quietly stretched out her foot to kick him.

Chen Xiaoxin came back to his senses and hurriedly handed the manuscript to Wu Tao, muttering, "Director Wu has finished it. Do you think it's correct?"

in fact
No need to watch it anymore.

When he was halfway through the calculation, Wu Tao knew there was no problem.

He held a dozen sheets of manuscript paper, looking at the various equations on them. He raised his head and asked eagerly, "Chen Xiaoxin, please consider it. Really consider it! As long as you are willing to come to the Department of Physics of Fudan University, you can get scholarships and guaranteed admission to graduate school. You don't even need to mention key research funds and professional titles. I will definitely give you the best!"

"Not only that."

"I'll ask an academician to endorse you." Wu Tao stared at him closely, his eyes full of unspeakable desire, and said excitedly: "You... you should think about it seriously. Also, if you want to take the college entrance examination, there is no problem. The Physics Department of Fudan University will wait for you to finish the exam, but you must come to Fudan University after the exam!" As soon as the voice fell,
He looked at Yan Xiaoxi with burning eyes and said eagerly, "Student Yan Xiaoxi, please consider it too!"

Faced with such an enthusiastic invitation, Yan Xiaoxi was a little hesitant for a moment, but fortunately Chen Xiaoxin was very cunning. He hurriedly said, "Director Wu, it's too early for us to consider this now. Please let us take the college entrance examination and then talk about this issue."

Damn!

Why can't you eat anything?
Wu Tao's blood pressure is soaring. There are two superstars who are about to rise in the field of physics, but they are not in the Physics Department of Fudan University. What a waste of my role as the director!

"Ouch!"

"Director Wu! Director Wu!"

The principal was laughing secretly when he suddenly saw Wu Tao seemed to be about to faint. He hurried forward to support him and said helplessly: "Pay attention to your blood pressure! Don't faint. Come on, let's sit down first. Don't be anxious. Let's discuss it slowly."

Wu Tao sat on the chair, breathing heavily, while Tian Hui, the class teacher who was a talented person, was fanning Wu Tao with a book.

no way.
If the director of the Physics Department of Fudan University fainted here, it would be a big deal.

And then,
The culprits, Crouching Dragon and Phoenix, have already slipped away quietly.

"Stupid. Can we both still study in the Physics Department of Fudan University?"

"There shouldn't be any problem, right?"

"The day before yesterday, Professor Wu fainted from anger, and today his son fainted from anger again. Is this... is this really okay?"

"Can we be blamed for not bringing blood pressure medication when going out?"

The father and son, Wu Da and Wu Xiao, went back with endless pain and helplessness. But Crouching Dragon and Phoenix Chick seemed as if nothing had happened, and they were reading in the classroom.

Finally, the night self-study ended. Chen Xiaoxin, carrying a bag of power banks, slowly left the classroom with the beautiful girl. In order to avoid suspicion, the two did not walk very close to each other, and kept a distance from each other until Chen Xiaoxin rode his electric donkey and stopped at the bus stop.
"boarding!"

Chen Xiaoxin patted the 'co-pilot' seat and handed her the helmet.

Yan Xiaoxi took the helmet handed to her, put it on, sat on her special seat, gently hugged his waist and said, "Ride slower, I'm still flowing"

"Uh?"

"Still flowing?"

"This is not right. It should all flow out!" Chen Xiaoxin frowned and said seriously.

"."

"Have you ever bled? You...you know nothing!"

Yan Xiaoxi's face darkened, she pinched his waist viciously, and asked angrily: "Besides, why did you calculate my menstrual period?"

“It’s instinct.”

Chen Xiaoxin smiled awkwardly and said quickly: "Okay, okay. Let's go."

The words fell,

He twisted the accelerator and rushed out directly.

snort!
Stinky man.
He is actually calculating my menstrual period. I see he has no good intentions!
Yan Xiaoxi pursed her lips tightly, her delicate face flushed slightly, and then she couldn't help but hug him tighter.
"Ugh"

"It's a headache to have two mountains of gold hidden in the class!"

When Tian Hui was waiting for the red light, she couldn't help feeling a little tired when she thought about what happened during the day. However, things like this might happen frequently in the future.

at this time
On the non-motorized vehicle lane, an electric vehicle stopped and was also waiting for the red light.

Tian Hui glanced subconsciously, but didn't take it seriously and continued to wait for the red light. Suddenly, she shuddered all over, her brows full of surprise and even disbelief, and she quickly turned her head to look again.
Isn't that Chen Xiaoxin riding the electric bike? Isn't that Yan Xiaoxi sitting in the back?
So close?

Hold so tight?

It’s over, it’s over. I’m afraid it’s not just a simple love relationship. Maybe they have already decided to spend their lives together!

(End of this chapter)