The top-head has large torque, wide range of speed, big pull force.
动力方扭矩大、转速范围广，起拔力大。
A simple and effective compensation method in low frequency to extend the range of speed is introduced in the paper.
本文将介绍一种简单有效的低频补偿方法以扩大其调速范围。
Practices indicate it has advanced design, high performance-cost ratio, and wide range of speed, reliable operation, and better portability. The electric control system can be applied to...
应用实践表明，该系统设计先进、性能价格比高、调速范围大、运行可靠、可移植性强，可以广泛应用于各种类型卧式镗铣床的电气控制系统改造。
Practices indicate it has advanced design, high performance-cost ratio, and wide range of speed, reliable operation, and better portability. The electric control system can be applied to...
应用实践表明，该系统设计先进、性能价格比高、调速范围大、运行可靠、可移植性强，可以广泛应用于各种类型卧式镗铣床的电气控制系统改造。
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