The relationship between mabutou and the space shuttle

The relationship between mabutou and the space shuttle

The standard distance between two rails on the US railway is 4.85 feet. This is a strange standard,
Where did it come from?
It turned out to be British Rail standards, because American railways were first designed and built by British people. Then,
What standards do British people use?

The British railway was originally designed by the people who built the tram track, and the 4.85 feet was used by the tram.
Standard. Where did the electric vehicle and rail standards come from?

The first person to build a tram used to create a carriage. They use the wheel width of the carriage as the standard. Okay, that
Why is the carriage determined by the wheel distance?

If there were any other distance between the horse and the car at that time, the wheel of the carriage would soon hit the old British road.
Bad. Why?

Because the path width is 4.85 feet. Where did these traces come from?

The answer is set by the ancient Romans. 4.85 feet is the width of the Roman chariot. If anyone uses a different wheel
If Kuan is driving on these roads, the life of his wheels will not grow. Let's ask again: Why did the Romans use 4.8?
5 feet is the distance width of the chariot?

The reason is very simple. This is the width of the ass of the horse that pulls the chariot. The story should have ended, but in fact
Not complete.

Next time you see the hero of the US Space Shuttle on the launch platform on TV, watch out for its fuel.
Both sides of the box are equipped with two rocket propeller that are provided by a factory in Utah. If possible
The engineers in the factory hope to make these propeller fatter, so the capacity will be larger, but he
No, why?

Because after the propeller is built, the train will be used to transport it from the factory to the launch site, and some tunnels will be used on the road.
The width of the tunnel is only a little wider than that of the train track.

The story is quite interesting. In a sense, the most advanced transport system in the world today may be
It is determined by the width of the buttocks of two horse fights two thousand years ago. How powerful is the historical inertia.
How difficult is the rule of sexual formation.