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What is the difference between a train track and a normal train track?

update:11-01-2020
abstract:

There are fewer turns on the train track, and the turn […]

There are fewer turns on the train track, and the turn radius is large. The turnouts are all high-speed turnouts.

Elevated rails and tunnels are widely used in train tracks. To ensure smoothness and shorten the distance;

The catenary of the train track, that is, the suspension method of the wires on the train roof is also different from that of ordinary railways to ensure the contact stability and durability of high-speed trains;

The signal control system of the train tracks is higher than that of ordinary railways, because the starting density is high, the speed is fast, and the safety must be high.

Introduction:
Track refers to a course paved with strip steel for trains, trams, etc. It can also be the course of celestial bodies moving through the universe. Also called trajectory.

The path of the object's movement is more of a certain regularity. For example, the movement of electrons in the atom and the operation of artificial satellites have certain orbits. Rules, procedures or scope to follow: Production is on track.