Chapter 670 (1/2)

Donne simply thumbed through Fiona's documents. Fiona was not idle when he was away these days. She finished everything he told her.

”Well done. Universal alloys are widely used and must be produced in large quantities.”

When Donne finished, he still felt a little sorry. If he majored in chemistry, physics and materials on earth, he might be able to find a set of equipment to find out what elements make ordinary steel qualitative change. Some element of those two herbs has become a catalyst for magic metal, So that the characteristics of magic metal can be integrated with ordinary steel, and the performance can be greatly improved. If you can understand it, you can find a way to extract the corresponding elements from ash thistle and silver thread on a large scale and directly synthesize universal alloy. The production efficiency can be improved more than a little?

Unfortunately, I really can't do it

Fiona shrugged, glanced at Donne, and then said expressionless, ”another is that the results of the mid-term exam have come out. I think it's necessary to give you feedback. The problem is very big now.”

”Hmm? Didn't Pamela leave all the exam to her.”

”Because the students are very resistant to the exam... Even because of the emergence of the exam, the students complain about you.”

Fiona looked at Donne strangely: ”even Elia complained to miss Elsa several times.”

Donne smiled when he heard the speech: ”what we want is this effect. Let them enjoy it slowly. They should be glad that I haven't taken out the simulation of one lesson, one practice and three years of college entrance examination and five years of college entrance examination.”

At the moment, Donne is full of evil taste. He intends to let these innocent and innocent children feel his suffering, and then call it ”heaven will have a great responsibility, so people must first work hard”

Fiona didn't understand what Donne was talking about, but she knew it wasn't a good thing. She stood up and said, ”after Ms. Pamela corrected the paper, she made a slight course and class adjustment according to the students' grades and good directions. She hopes to teach students according to their aptitude so that each student can master what she is best at.”

Donne frowned: ”is it a little early? They have just come into contact with basic education and can't see their talents. Basic education must be compulsory and completely accepted.”

”You can discuss this matter with Ms. Pamela.”

”Tell her for me. I don't have time.”

Donne shook his head, took out some small things and threw them on the table: ”in the next few days, I'm going to study something... By the way, go and help me find otinia. I have something to do with her.”

Fiona looked at it and found that it was some small parts that were unknowingly sharp. She nodded and left.

”Deep sea torpedo... Although it's very simple...”

Donne rubbed his forehead. I'm afraid only he knew how big the problem was.

Power is not a problem. The problem lies in the resistance of deep-sea torpedoes to water pressure. Although the oval structure can effectively reduce water pressure, the deepest depth of the abyss sea can reach 4000 meters. Whether torpedoes can withstand such strong water pressure is a big problem.

In addition, there is the problem of magic power signal transmission. In the deep sea, the concentration of water element is quite large and the interference is very strong. I'm afraid the transmission of control signal by magic fluctuation will be disturbed. The best choice is to use the ubiquitous water element in the deep sea to realize communication and control.

The key is how to activate the warhead.

The small parts on the table floated in front of Donne and quickly combined into a mini torpedo. As soon as he waved, a spray appeared in the air, and then wrapped the mini torpedo. Donne began to pressurize constantly.

When the pressure increases by about 50 times, the mini torpedo has undergone obvious deformation, which shows that the strength of the material is not enough to resist the next pressure.

Donne frowned: ”sure enough, the single-layer structure is not feasible. It's only 50 times the pressure, which is only equivalent to the strength of about one kilometer underwater... Then replace it with a double-layer composite structure.”

He recalled the material structures he had seen on earth. He remembered that there was a double-layer pressure resistant shell structure, in which a transverse support rod (rib) was added in the middle of the two-layer partition walls, and then the interlayer was filled with high-pressure gas to improve the compressive strength of the shell, so as to realize the stress state of stepped pressure drop.

He thought of doing it. After scattering the water polo, he immediately began to make another Mini torpedo.

Before long, otinia pushed the door in and said, ”what's up?”

Donne glanced at otinia and was stunned. ”What are you doing?”

Otinia's silver hair is quite beautiful, as soft and smooth as satin in the moonlight, but now her hair is covered with weeds, and her clothes are a little messy, like rolling in the grass. As a goddess, this image is too destructive.

Instead of answering Donne's question, otinia repeated, ”what's up?”

”Of course.”

Donne pointed to the sofa. ”Sit down.”

When otinia sat down, Donne brought her a cup of tea, some homemade refreshments, and then said, ”I have a problem. I want to use your strength to solve it.”

Otinia had just picked up a piece of pastry and was ready to bite it down. Hearing the speech, she immediately put it back vigilantly: ”what?”

”Well, you eat, I'm not using you to do anything bad.”

Donne was bewildered by her vigilance. Unfortunately, otinia didn't respond at all. She just looked at him directly. The girl's deep eyes were full of vigilance.

”Well, I'll be straight.”