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Earth sciences
containing
variable-speed
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Chinese
constant rotary speed, variable weight
定
转
速变
钻
压法
钻井最优化方法之一
variable speed
可变速率
variable speed
gear
变速传动装置
variable speed
gear motor
变速式齿传动马达
variable speed
isosynchronous
变速等同步的
variable speed
motor
变速马达
variable speed
motor
变速动力机
variable speed
pumping
变速抽水
variable-speed
/constant-frequency
变速/稳频
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