rotating-armature generator

But the efficiency of electrical generator is direct proportion with the square of rotating speed.

然而发电机的效率却与转速的平方成正比,因此大型风力发电机需用齿轮箱加速.

The lower limb exercising device is a pedaling rotating wheel to drive a generator;

下肢锻练装置为脚蹬转轮带动发电机装置；

Numerical examples are carried out for a model rotor-bearing system with five bearings in a domestic 200 MW turbine generator set, which shows that the calculated results are in good agreement with those measured for some actual rotating machinery. Furthermore.

分别对一个5支承的模型转子系统以及国产200MW汽轮发电机组进行了数值计算，结果表明本文的计算结果与机组的实测结果比较一致。

A generator is a machine which converts rotating mechanical energy into electrical energy.

发电机,是把(旋转)机械能转化为电能的装置.