Of course, Zhao Chengming also remembered the scene when Zhang Desen explained this type of knowledge to them. Zhang Desen also spent a lot of effort to explain this type of knowledge to them.
However, when Zhang Desen explained to them at that time, he was still able to explain everything frankly. After using various instruments, equipment and data on their spacecraft to continuously explain, they finally understood what was going on.
But now when facing General Feng Yucai and the others, there are still many things to consider and whether they can be discussed. At this time, Zhao Chengming couldn't help feeling that he was really old-fashioned at the time.
However, at this time, General Feng Yucai and the others were a little impatient. At this time, General Feng Yucai immediately said:
"How about this? Maybe if you continue to explain for a long time, you still won't be able to explain clearly what is going on. Now I want to ask, when will Mr. Zhang come back? I want to talk to him directly."
Zhao Chengming said:
"I can't tell clearly. I only heard what he said about the place he is going to now. But I have never been there myself, so..."
However, before Zhao Chengming could continue speaking, the radio contact device on his body suddenly rang. Just listen to the voice inside saying:
"Zhao Chengming, Zhao Chengming, I am Zhang Desen, please answer if you hear me. Zhao Chengming, Zhao Chengming, I am Zhang Desen, please answer if you hear me."
Zhao Chengming did not expect that Zhang Desen would suddenly use a clear code to contact him. He immediately picked up the radio contact device and was about to say something. Just listen to Zhang Desen continue:
"You didn't even turn off the communicator just now. I have already heard the conversation between you and General Feng Yucai. Didn't I want you to tell General Feng Yucai that I will definitely be back before dark?"
However, before Zhao Chengming could say anything, Feng Yucai, who was standing opposite Zhao Chengming, immediately shouted:
"Is that you, Mr. Zhang? Are you still in the house now?"
However, Zhang Desen immediately interrupted him and said:
"General Feng, you misunderstood. What you are seeing now is a radio contact device. I am not near Hezhou City yet. I will explain the specific things to you when I return. Now I also plan to tell you some facts. Please Wait for me."
Feng Yucai immediately asked:
"Is there such a magical thing in the world? Then where are you now?"
Zhang Desen said:
"It's best not to let too many people know about this."
And Feng Yucai immediately said:
"Don't worry, you are surrounded by your confidants and my confidants. I immediately ask some people to stay away. Oh, I can't just listen here by myself."
Then General Feng Yucai asked the people around him to stay away. But Feng Linger immediately said dissatisfied:
"Zhang Desen. Do you have anything to hide from me?"
When Zhang Desen heard that Feng Ling'er was there, he couldn't help but feel a headache. But after thinking about Feng Ling'er's character, Zhang Desen also felt that she would not talk nonsense, so he had to say:
"Then Miss Feng, please don't say something you shouldn't say."
Feng Linger immediately said angrily:
"Don't worry. Where are you now? I will come to pick you up personally."
Zhang Desen smiled and said:
"Miss Feng, you can't help me now..."
Feng Ling'er became even more unconvinced, but after thinking about it, she had to ask:
"Then where are you now?"
Zhang Desen could only reply:
"I am over the Ulangumu area and have not yet entered the atmosphere. I have just circled the earth once and I will soon enter the earth's atmosphere. After adjusting the last flight attitude in a while, I will enter the earth's atmosphere. I will soon It will land near Hezhou City, please don't tell others about this."
Although Zhao Chengming and others certainly understand what Zhang Desen is talking about. But General Feng Yucai and his daughter were confused. And Feng Ling'er said even more angrily:
"What riddles are you making again???"
However, Zhang Desen immediately interrupted him and said:
"Okay, don't bother me anymore. If you continue to ask now, you will be in trouble..."
Then Zhang Desen changed his tone and said to Zhao Chengming
road:
"Zhao Chengming, I will enter the atmosphere soon. Make arrangements for navigation and landing immediately. When we pass through the black barrier area later, there will be no contact. Remember what you have to do."
Zhao Chengming immediately replied:
"yes!!!"
Then both parties ended contact at the same time. At this time, Zhao Chengming immediately said to General Feng Yucai and his daughter in front of him:
"General Feng, Miss Feng. There are indeed some things that we cannot accompany you at this time. There are some things that we can talk about later, such as..."
General Feng Yucai immediately said:
"It's okay, it's okay. When Mr. Zhang returns, please remember to tell us."
Zhao Chengming immediately replied:
"General Feng, you can rest assured. We don't want to hide anything from General Feng anymore. The captain actually made some things so clear just now. Then I will add something more and explain some things to the general."
General Feng Yucai said excitedly:
"Okay, this is exactly what I need. I have always admired Mr. Zhang very much, so Mr. Zhang's affairs are my business."
Zhao Chengming didn't want to be polite anymore and said directly:
"It's very simple. The captain just said that his spaceship is about to enter the atmosphere. So, that means he will return to Hezhou City soon. General Feng only needs a moment."
General Feng Yucai immediately said excitedly:
"Okay, that's it, I'll guard the door here. Don't say any more excuses, otherwise you will look down on Feng. Manager Zhao can just go and do his own business immediately, don't say any more."
After Zhao Chengming heard what Feng Yucai said, he stopped delaying. Said directly:
"good!!!"
Then Zhao Chengming went to do what he should do.
…
After a period of flight attitude adjustment, Zhang Desen's spacecraft officially began to enter the earth's atmosphere. At this time, Zhao Chengming, who had arrived in the main control room of the "Crater", asked the navigator:
"Is everything ready for navigation now? Has the spacecraft entered the Earth's atmosphere?"
And the navigator said:
"Comrade Captain, the captain's spacecraft has begun to enter the earth's atmosphere. It will soon enter the black barrier area. According to all the current data, the whole process is going well. It is expected that it will be able to completely return to the sky above Hezhou City soon. "
And Zhao Chengming said:
"Good, keep monitoring. Are there any additional obstacles in the way?"
And the navigator said:
"Comrade, Comrade Captain, I have not seen any inexplicable obstacles so far.
obstruction. Everything went smoothly on the channel, and no other UFOs were found on the channel that the captain's spacecraft was about to fly through. "
After hearing this, Zhao Chengming thought for a while and said:
"Okay. Immediately project the contour map of the channel on the split screen on the right for me to see."
The navigator immediately said:
"yes!!!"
One more thing to mention here is that a contour map is a map that uses contour lines to represent the ground relief and height conditions. On the same contour topographic map, the higher the ground, the more contour lines there are. Where contour lines are dense, the ground slope is steep. Wherever the contour lines overlap, there must be a cliff.
If the contour lines form a smaller closed curve, the area is a peak, depression or island. The shape of the contour line is the ridge that gradually protrudes outward from the top of the mountain. The line connecting the ridges is called the watershed. The contour shape is gradually concave toward the top of the mountain or the saddle, which is the valley, and the line connecting the valleys is the water collection line. The place where the convex sides of the two contour lines are symmetrical to each other is called the saddle of the mountain.
On a contour topographic map, the general condition of the land surface can be interpreted based on the different curved shapes of the contour lines.
When the contour lines are closed, if the height is low on the outside and high on the inside, it represents a convex terrain (such as peaks, mountains, hill tops, etc.); if the height of the contour line is high on the outside and low on the inside, it represents a concave terrain (such as a basin) , depressions, etc.).
When the contour line is curved, the part where the contour line curves toward higher places is represented as a valley; the part where the contour line protrudes toward lower places is called a ridge. When several contour lines with different elevations intersect at one point, the terrain there is a cliff, and a cliff legend is drawn on the map. A pair represents a valley and a pair represents a ridge, etc.
The terrain part composed of high lines is the saddle.
Areas with dense contour lines indicate a steeper slope; areas with sparse contour lines indicate a gentler slope.
When representing landforms such as hilltops, small depressions, and small saddles, the dimensions of the real and imaginary parts can be shortened. In equal-inclined areas with relatively dense contour lines, when the gap between the two curves is less than 2, the first curve can be omitted and not represented.
When the contour line encounters symbols such as houses, cave dwellings, highways, rivers, gullies, cliffs, embankments, and cuttings represented by double lines, it should be expressed to the edge of the symbol.
Zhao Chengming, who was looking at the screen, quickly saw the required contour map. But what I have to say is that Zhao Chengming soon discovered that such a two-dimensional map seemed a bit dizzy. He immediately said to the navigator:
"Make it three-dimensional immediately. I want to see it more three-dimensionally."
The navigator immediately replied:
"yes!!!"
Soon the navigator followed Zhao Chengming's instructions and completed what he was supposed to do. Then the navigator said to Zhao Chengming:
"Comrade Captain, there is actually no need to worry so much. When Comrade Captain is about to land on the ground, he has already reached a relatively flat area, so there is no need to worry about any additional obstacles..."
Then, the navigator said excitedly:
"Besides, Comrade Captain's spaceship was produced by the Chinese country in his original universe, and its technological content is among the most advanced there. Even if it encounters a few small obstacles, it will definitely be able to avoid them easily. In fact, we There is no need to worry so much!"
And Zhao Chengming said:
"It's always better to be cautious..."
Then, Zhao Chengming suddenly saw some abnormal flying targets on the screen, and immediately pointed at the screen and asked:
"What are those?"
Everyone was immediately startled and stared at the screen.
