然而安装一个齿轮减速器后，涡轮可以高速驱动低速运转的风扇。
A gearbox, however, allows the turbine to operate at a high speed while driving the fan at a lower speed.
所有减速机在出厂前已经在厂内进行过空载试运转，现场进行试运转主要目的是进一步观察减速机在存在一定负荷时的运行情况。
All gear reducers are subject to no-load test-run in the workshop prior to delivery. The commissioning in the field is intended to check the gear reducer operating with load.
减速机的承载能力增大，效率提高，噪声降低，运转平稳。
And this speed reducer possesses big bearing capacity, high efficiency, low noise and smooth running.
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