At this time, Liu Yiyi suddenly walked up to Dai Yanchou, walked around Dai Yanchou in a serious and curious circle, suddenly stopped, and pointed at Dai Yanchou loudly: Let me tell you! This is an AN94 automatic rifle that fires 5.45mm*39mm bullets. It adopts single shot, two shot, and continuous shooting methods. The total weight of the gun body is 3.85 kg. The total length of the butt is 728 mm when folded. It can be equipped with 30, 45 Or 60 round detachable magazine.
Not only that, it can also be equipped with sights, night vision goggles, and grenade launchers. When firing continuously without support from a standing position at a distance of 100 meters, the distance between the impact points of the two rounds is less than 2 centimeters.
This gun was designed by the Russian Nikonov in the 20th century based on the former Soviet Kolashnikov AK74 automatic rifle. Its ingenious and unique technology is that, first, it uses the principle of automatic mixed recoil impulse to greatly reduce the adverse impact of recoil on burst dispersion; second, it also adopts dual-shooting technology, that is, it starts with a high rate of fire of 1800 rounds per minute, and implements 2 Fire a burst fire, and then reduce the rate of fire from the third round to the rate of fire of an ordinary rifle, which is 600 rounds per minute.
In fact, the so-called automatic mixed recoil impulse principle is to use two inner and outer receivers. The inner receiver houses the bolt assembly, and drives the bolt movement through the bolt frame to realize opening and closing, ejection, ejection, feeding and other mechanism actions. , the locking method is bolt rotation locking. The inner receiver is connected to the barrel to form a large assembly that moves along the guide rails on the outer receiver. The recoil produced by gunpowder gases when shooting.
In this way, it will not directly act on the human body, but first act on the barrel and receiver, and then pass to the human body through the outer receiver. After firing two bullets at a rate of 1,800 rounds per minute in burst fire mode, the barrel is still recoiling. Only when the warhead leaves the muzzle does the recoil reach the shooter's shoulder. At this time, it has no effect on the accuracy of the weapon.
This is the subtlety of the AN94 automatic rifle. You, Dai Yanchou, don't even know this, how do you use a gun? You said you only know how to use it, but you don't know how to say, OK, then you use this gun. I'll give you 30 rounds of bullets, with a range of 100 meters, and see how many you can hit? Li Zhuangzhuang, go and prepare a shooting target. It must be new and must have never been shot before.
Yes, instructor! Li Zhuangzhuang agreed and left. Soon the preparations were completed and I returned.
Dai Yanchou, let's start, Liu Yiyi ordered: single shot, double shot, continuous shot, you can choose.
Dai Yanchou adjusted his posture, took aim, and pulled the trigger. After inspection, it was strange that 18 shots hit the bullseye, 11 shots hit the 9th ring, and 1 shot hit the 10th ring. After the pistol was tested at 50 meters, all shots hit the target, and the pistol was tested at 100 meters, and only 2 shots hit the 10-ring line. Everyone present was surprised. Kabaro's eyebrows stretched and he laughed: Yiyi, can you agree? I said that my Yunnu country soldiers recommended by Simi will not embarrass me!
Her Majesty the Queen, you have passed the test and can join the Flamingo Team! Liu Yiyi smiled apologetically at Kabaro: However, the next training may be more rigorous and cruel, I hope she can survive it. Only by working hard can you become the best among the best!
Du Ruolan was also filled with joy, nodding his head and shouting: Dai Yanchou, I order you to join the fourth training group of the Flamingo Team and obey all the instructions of the team leader Di Fanzhou. Go for it!
In this way, the day's military training is coming to an end, and it's time for the theoretical class in the evening. It was Liu Yiyi's turn to give the theoretical class today. The team members were sitting in the hall of the camp. This is a temporary military tent. The facilities in the tent are quite complete. Liu Yiyi did not prepare a speech script, so she could only explain based on memory and her own opinions. She didn't know if she could teach this lesson well, but she had to be confident and not slack off. Liu Yiyi walked up to the podium dignifiedly, glanced at her for a week habitually, and then said calmly:
Comrades! friends! We had a great time together, and I'm glad there was such enthusiasm. Tonight, this is the first theoretical lesson I give you. Let’s start with the numbers. Who can tell me where the numbers come from, what are they, what are the largest and smallest numbers?
Report to the instructor, I don’t want to hear numbers, it’s boring, what’s so new? Dai Yanchou suddenly raised his hand and reported: Please tell me something else.
Classmate Dai Yanchou, please answer the question I just asked first. If you answer it correctly, I will change the topic; if you answer it wrong, I'm sorry, you can only listen attentively. Please answer!
Dai Yanchou thought for a while and answered with some hesitation: Numbers were invented by the Arabs, but there is no maximum number and minimum number. There are only 10 Arabic numerals including 0, 123456789. complete!
sit down! Your answer is incorrect! Liu Yiyi quickly scanned the hall with sharp eyes, criticizing Dai Yanchou while continuing to speak: I tell you, the largest number is called infinity, and the smallest number is called infinitesimal. You may ask, what do these numbers have to do with our training? I’m here to tell you, it’s a big deal.
You all know the ancient Egyptian pyramids, but the mysterious numbers hidden in the ancient Egyptian pyramids have the same mystery as the ancient Hetu Luoshu of our Chinese nation. Maybe you don’t know this, right? This secret is the secret about the entire universe, and can also be called the cosmic code.
The string of numbers in the pyramid is 142857, and the only three numbers missing are 3, 6, and 9. It seems like an ordinary set of data, but it is very magical. Multiply 142857 by 1, 2, 3, 4, 5, and 6 respectively, and you will get repeated numbers starting with 1, 2, 3, 4, 5, and 6 respectively. Please take out your cell phone, open your calculator, and give it a try.
When 142857 is multiplied by 7, you get this strange set of numbers 999999; what's even more strange is that you divide 1, 2, 3, 4, 5, and 6 by 7 respectively, and you also get this set of cyclic numbers. If you multiply this set of numbers by itself, you get 20408122449. Add the first part 20408 and the last part 122449 of this set of numbers, and you get the set of numbers 142857.
There are many secrets about this set of numbers. If you are interested, please discuss them after class.
Next, let me talk about the Hetu Luoshu of our Chinese nation. Hetu Luoshu uses white dots and black dots to represent numbers, and there is no number 0 in it. According to the arrangement of numbers, a Nine Palaces chart can be formed.
Liu Yiyi wrote on the blackboard:
4 9 2
3 5 7
8 1 6
It needs to be explained that each number represents several points; for example, 4 represents 4 points, 9 represents 9 points, 2 represents 2 points, and so on. Look at this Nine Palaces chart. Add, add vertically, add diagonally, the sum of the numbers is 15. You see, the center of the nine palaces is the number 5. If we subtract the number 5 in the center of the nine palaces from its nine numbers, we get:
-
1 4 -3-
2 0 2
3 -4 1
In this way, the center of the Nine Palaces becomes the number 0. Look again, a mystery has appeared. No matter whether the numbers of this set of nine palaces are added horizontally, vertically or diagonally, the sum of the numbers is 0. At this point, our ancestors wisely thought that heaven and earth Everything starts from scratch. Zero is nothing, and when something comes out of nothing, there is Tai Chi. The yin-yang fish in the center of Tai Chi represents one positive and one negative, and the sum of infinity and infinitesimal is also 0. This is our universe.
(End of chapter)
