The Difference Between Geared And Gearless Tractio..

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The Difference Between Geared And Gearless Traction Elevators | #Elevators

The Difference Between Geared And Gearless Traction Elevators

The Difference Between Geared And Gearless Traction Elevators

In the past, most elevators had to be controlled through a centralized machine room

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