Qinghai–Tibet Railway: The Longest and Highest Highland Railway in the World
The Qinghai–Tibet Railway is a 1,956 km long railway network located between Golmud and Lhasa in China. It is also known as the “heavenly road” as it...
Advantages and Disadvantages of Different Types of Movable Bridges
There are different types of movable bridges used for the passage of vessels and ships underway. Advantages and disadvantage of these bridges are...
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