Super Weapon Swap System

Yangbei country is a highly developed capitalist country. It is the fourth largest exporter of agricultural products in the world. It is also the country with the largest export volume of various minerals in the world. Therefore, it is called "a country sitting on a mining cart". At the same time, it is also the country with the largest number of sheep and wool exports in the world. It is also known as the "country riding on the back of sheep".

That's the name of yangbei country.

The yangbei country occupies a continent alone, with a small population. The typical land is vast and sparsely populated. Cars have become the main means of transportation in yangbei country, and the domestic transportation industry is mainly maintained by trucks, especially inland transportation.

A large number of people live in several cities by the sea. Inland, they mainly transport ore. trains are not popular here, and almost all of them are transported by trucks.

At the same time, the trucks here are also different from the outside world.

If the truck does not tow anything, it is called a bicycle. In China, now the popular is a full trailer. The bicycle in front is added with a cargo bucket to form two sections. At the same time, there is also a semi-trailer test, that is, there is only one front and a hanging bucket behind.

No matter what form, it is Pediatrics here. The main force of transportation here is highway trains.

The driver's salary is very high. A driver can transport the most minerals. Of course, he can save a lot of expenses. The truck here has a head in front and three to four 12 m 5 semitrailers in the back. In this way, it is a highway train running on the highway.

The total weight is often hundreds of tons.

In addition to this load, another is its speed limit.

There is no highway in yangbei country. General intercontinental highways are two-way single lane with a speed limit of 100km / h.

Such a speed limit is not the maximum speed limit, but the minimum speed limit.

Because of this single lane, overtaking is not easy. If the car in front drives slowly, there will soon be a backlog of cars behind. At the same time, it is not easy to stop this high-speed drag racing. In sparsely populated areas in the middle, there are often some animals on the road. Therefore, another feature of the road trains here is that they have an incomparably huge bumper in front of the front of the car. When they encounter anything, they can only hit directly!

Qin Guan and others were shocked by this scene when they left the soft beach of the capital and entered the section of highway closest to the capital.

"I think I should let him come and have a look." looking at all this, the scholar said with emotion: "if our North heavy truck factory could also make this kind of truck."

Everyone took a large pickup truck. At this time, the pickup truck had left the road and parked at will under the road. When they stopped, there was a car rumbling behind.

With that sharp big nose, there are at least engines with more than 500 horsepower inside. Two thick exhaust pipes spray towards the sky behind the cab. When passing by them, it seems that the driver is showing off and stepped on the accelerator hard. Therefore, two dark pillars of smoke spray towards the sky, one section, two sections at the back, Three, this is three cars.

This is the train skin on the road! The scholar secretly thought in his heart, when should Bala see it.

Qin Guan shook his head. This kind of heavy truck is only useful in yangbei country. After all, they are vast and sparsely populated, so they can't do it in China. Therefore, even if they are manufactured, the sales volume is very small. The Wanguo, skania and so on here have long divided up the market. It's not cost-effective to specially manufacture an export truck for such a small market.

Besides, how bold people are and how productive the land is, such a load has also been popular in China. It uses Steyr heavy truck, with a carriage hanging at the back, with a total weight of more than 200 tons. All the roads are crushed along the way. As long as you go uphill, it will be as slow as a snail ox climbing, constantly breaking the wheels and constantly repairing all the way, It is absolutely not advocated.

The culprit of destroying the market. The more transportation, the lower the transportation unit price. There is no other benefit in destroying roads and shortening the service life of cars.

Qin Guan was not interested in this. He looked at the cars following him and said, "well, work hard and let them know our construction speed!"

With that, Qin Guan put on a hard hat.

After so many leisurely days at the seaside, it's time to work now. He shouted to the back: "everyone should pay attention to safety!"

Pickup trucks are very popular here, and there are many working vehicles. Now, on a trailer behind, an excavator is slowly moving down.

What are you doing here?

Optical fiber, of course.

The base stations are set up. How do the base stations communicate with each other? Optical fiber, of course.

Before there was no optical fiber, telephones were transmitted in communication cables. There were many wires in the thick cables. Each group of calls needed two wires. If there were 100 groups, there would be 200 wires. Therefore, the thicker the cables were, and there were thousands of cables in the switch room, which was definitely a nightmare for engineers.

With optical fiber, everything changes. A thin optical fiber can transmit many groups of data. A thick cable can be solved with a thin optical fiber.

In 1976, the underground pipeline of Bell laboratory opened the first test line of optical fiber communication system in the world. An optical cable with 144 optical fibers is used to transmit signals at the rate of 44.736mbps, and the relay distance is 10km. The multi-mode optical fiber is adopted, the light source is led, and the wavelength is 0.85 micron infrared light.

By 1977, the world's first optical fiber communication system was put into commercial use in Eagle country, with a rate of 45Mb / s.

Two years later, China also independently developed the first practical optical fiber, and Zhao Lao is known as "the father of optical fiber in China"

By 1980, multimode optical fiber communication system was commercialized, and the rate reached 140MB / s.

Now, optical fiber is the fastest and most efficient way to transmit information between base stations.

If you want to bury optical fibers, you need to dig ditches and bury them underground. Fortunately, this section is the softest soil. If you go down with an excavator, you can shovel a ditch.

At the same time, it doesn't need to be too deep. It's enough to dig down dozens of centimeters, lay optical fibers, and then cover with soil.

Anyway, there will be no project here. At the same time, the construction period is very tight.

After discussing with Qin Guan, Carl couldn't wait to urge Qin Guan to hurry up. After all, he had only three days. On Friday, he had to compare with solo's project. This is absolutely impossible to lose. Therefore, Carl had to pay a high price.