country made

After cheating other friends, Ji Yu also apologized to everyone, and invited everyone to have a meal as compensation for the cost of travel bags.Everyone was not very angry at first, but now they are completely out of temper.

"It's okay, it's better if Yuanyuan doesn't leave, and you can help us with our homework by the way."

"That's right, that's right, the third year of junior high school is difficult, it's great for Yuanyuan to stay here!"

Everyone's basic foundation was not good, and they didn't work hard. The reason why their test scores have been good recently is thanks to Ji Chen's make-up lessons.Basically, when it was time for an exam, they would come to Ji Zhuan for an intensive class, and let Ji Zhen help guess the questions by the way.

When they thought that Ji Zhuan was going to leave, they were really sad because there was no one to help them make up lessons.

But no one cares as much as Song Jining, and it's not like he won't come back.

Originally, Ji Chen didn't intend to disturb Song Jining in the third year of junior high school, but it was rare that Song Jining promised him that he was willing to learn technical knowledge. Ji Zhen was afraid that it would take a few days, and little brother Song would regret it when he came to his senses.Of course, teaching is fun, and he also hopes that Brother Song will like what he has learned, so he specially picked out two books.

One "Basics of Numerical Control Technology" and one "High Frequency Electronic Circuits".

At Song Jining’s home, Ji Yu put two books on the table, one on the left and one on the right, and introduced to Song Jining: “The Basics of Numerical Control Technology is about the basic principles of CNC machine tools, which are basically useless in reality, because CNC machine tools are very complicated. It is very expensive, and we have no conditions for research. But if we research it, the price of any one is tens of millions of times that of a TV. "High Frequency Electronic Circuits" is about integrated circuits and transistor tuning, and its technology is mainly used in TVs. machine and various displays.”

Song Jining was puzzled: "Obviously what is the weapon?"

"...Uh, it's also something that displays various images."

"Isn't that just a TV? Or a movie?"

"Ugh, better than TV and movies."

Song Jining's eyes lit up: "Is it worth money?"

"It's more expensive than a TV." Before Song Jining was distracted again, Ji Yu said: "It's useless to study it. The monitor is currently only used by some scientific research units."

Song Jining fell back on the chair, annoyed: "The grandfather of the farm told you again?"

Ji Yu smiled and acquiesced, and pushed the two books over: "Because Brother Song is already in the third year of junior high school, I only plan to teach you one book this semester. Which of these two books is Brother Song more interested in?"

Song Jining picked up the two books and flipped through them, but found that he didn't quite understand them.Ask Ji Yu: "If I study "High-Frequency Electronic Circuits", can I draw the circuit diagram of the TV by myself?"

Ji Yu shook his head: "It's not enough."

"If I want to be able to develop a TV by myself, how much professional knowledge do I need to learn?"

Ji Yu thought about it for a while, and said seriously: "Many, many."

Black and white TVs do not seem to have high technical content. If you want to master its principles and knowledge, you need to learn a lot.

Song Jining pushed the book back and praised "Basics of Numerical Control Technology": "Then learn this book!"

"Why did you choose that book?"

"Didn't you say this is more valuable? Anyway, I don't know either. Since I have to learn, of course it will be more profitable to learn. And this book is relatively thin."

The joy in Ji Yu's heart could not be restrained, he really hoped that Brother Song would learn the book "Basics of Numerical Control Technology".

"Let me tell you first, this book will be more difficult. If Xiao Song is sure to learn it, don't give up halfway!"

The expression on the face is completely seen, I just want me to learn this book!

Song Jining snorted, and slapped the book on Ji Yu's forehead: "Okay, okay, this is it. Let me state first, I decided to take a look because I promised you before, and you said it was valuable. If you are later I found it worthless, don't blame me..."

He squeezed his fist threateningly at Ji rafter.

Ji Yu covered his face with a book, and looked at him with only a pair of moist eyes: "Brother Song, I won't lie to you, CNC machine tools are really valuable, and many machine tools used in our country have to be imported from foreign countries, and higher-end ones are banned from sale. .If Brother Song can research it, the money he can earn is worth more than opening an electrical appliance factory."

But what you earn is not the money from selling, but the rewards from the state.

"Doesn't it sound harder than a TV? How could I research it?"

Ji Chen smiled without saying a word.

Everything you say now is just a castle in the air, but one day, he will assist Song Jining to get the honor that belongs to him.

Song Jining said it was impossible, but in fact he was very moved.

The radio that Ji Zhuan made before, and the TV that is currently being researched, which one is not a super valuable luxury?Since he said that CNC machine tools are valuable, they must be valuable.

And Song Jining likes everything that can make money.

Another aspect is about self-esteem.

The radio was studied by Ji rafter, and the TV was studied by Ji rafter. He didn't understand why Ji rafter chose him as his partner, since he knew nothing.But asking him to push Ji Rafter away, he couldn't do it.He wants a lot of money, and the technology provided by Ji Zhuan can help him make a lot of money, so even if he is shameless, he must become Ji Zhuan's "partner".

But he doesn't plan to push everything to a child, he can't help with the TV, since Ji Chen wants to study CNC machine tools, then he should research CNC machine tools before Ji Chen.

——Song Jining at this moment is firm and pure.

then……

Then he quickly knelt down.

"Basics of Numerical Control Technology" looks similar to the "Basics of Mechanical Manufacturing Technology" he learned before, but the difficulty is not in the same order at all.

The few books he learned before were very easy, and he felt that the professional books were not too difficult, so learning this book was no different.

Who knew that he would not be able to understand it!

Coordinate axis, block number, thread cutting, constant linear speed... what are these talking about?

Although there is a structural diagram of the machine in the book, Song Jining has never seen a CNC machine tool, and he can't tell what it looks like by looking at the abstract diagram.I can't even understand what it is used for.

He originally thought it was an ordinary machine tool in the factory, but after looking at it, he realized that it was not at all.

Because it is too complicated, ordinary machine tools in the factory don't use such complicated content at all-Ji Zhuan actually said that this is just the basics? !

"Ah, no, it's too difficult to learn!" Song Jining complained lying on Ji Yu's desk: "I'd better learn about TV, at least I've seen TV, and I can understand what the book says about high-frequency image transmission. .What constant linear velocity is I don't understand."

Ji Yu scratched his head, he didn't expect that Song Jining could not understand "Basics of Numerical Control Technology" at all, and obviously he became an expert in this field, so that when a certain country wanted to buy it, he was severely slapped in the face, and the previous "high-precision "Mechanical Prohibition" regulations fanned it back.

But now Song Jining can't even learn the basics.

Is it really because of different experiences?

Think about it, the future teachers must often have access to various high-precision CNC machine tools, and only then have the later research results.And Brother Song doesn't even know what a CNC machine tool looks like.

"Well, as expected, you still have to see the CNC machine tool first? But where is the CNC machine tool?"