... 调心轴承self-aligning bearing 调压调速variable voltage control 碟形弹簧belleville spring ...
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20 Hz and 2 Hz discharge rates20赫兹和2赫兹放电率 Variable Voltage control可变电压控制 Generates both Positive and Negative polarity*产生了积极和消极的极性* ..
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Motor variable voltage control 马达变压控制
PWM variable voltage control PWM调压调速
variable voltage speed control 变压调速
variable output voltage control 变输出电压控制
ac variable voltage speed control 交流调压调速
variable voltage speed control system 调压调速系统
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