... variable-speed [可]变速 variable-speed control 变速调节 variable-speed drive 变速拖动[装置] ...
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Variable speed control motor system 无极变速控制马达系统
ac variable speed control 交流调速
variable speed control unit 变速控制装置
variable speed control lever 无级变速操纵杆
variable frequency speed control 变频调速
microelectronic variable-speed control 微电子变速控制
AC variable speed control system 交流调速系统
main line variable speed control 主线可变速度控制
Variable-speed control pump performance, more economical, a broader scope of application of all agricultural water pumps can be used.
变速调节水泵性能，比较经济，适用范围较广，对所有农用水泵均能采用。
Variable-speed control we already know, at a certain speed axial flow pump are working under, and to obtain the corresponding flow, lift, power and efficiency.
变速调节我们已经知道，轴流泵是在一定转速下工作的，而且获得相应的流量、扬程、功率和效率等。
The drill has variable speed control.
这钻机有变速控制。
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