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1·The drill has variable speed control.

这钻机有变速控制。《牛津词典》

2·Variable speed power feed table.

变速功率饲料表。

3·Analog fixed speed and digital variable speed.

模拟固定速度和数字式可变速。

4·Compact, accuracy variable speed drilling machine.

结构紧凑，精度变速钻孔机。

5·Contolled by microcomputer, displayed by led, stepless variable speed.

采用微电脑控制，LED显示，无级调速。

6·The model of hydraulic motor pump variable speed control system is built.

同时建立了该液压电机泵变速控制系统的数学模型。

7·Variable speed hydraulic drive system is a new type energy saving system.

变转速液压驱动系统是一种新型的节能传动系统。

8·The advantages of the switched reluctance variable speed machine is given.

给出开关磁阻调速电机的优点。

9·Two control ring work together to realize variable speed constant frequency.

运行时机组的两个控制环同时工作，实现变速恒频。

10·A hydraulic variable speed drive system of shield disk cutter has been designed.

设计了盾构刀盘变转速液压驱动系统。