其中节流调速回路的功率损失大，低速稳定性好。
Speed control loop in which the power loss of throttle large, low-speed stability.
大功率不锈钢电阻器过负荷能力强，热稳定性好，使用寿命长。
Good overload and heat-durability capacity, the use life is longer then the others.
大功率不锈钢电阻器过负荷能力强，热稳定性好，使用寿命长。
Good overload and heat-durability capacity, the use life is longer then the others.
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