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- 工频机UPSIndustrial frequency UPS
- 工频机SOI Drive
- 机machine
- 高频机UPSHigh frequency UPS
- 换频机inverted frequency converter
- 多机UPS现场监控系统的设计Design of Multi-UPS Field Supervision System
- 脱机off-line
- 射频机inductothermy apparatus; radiofrequency machine; short wave device; short wave diathermy apparatus; short-wave therapy apparatus
- 工频量fundamental frequence
- 工频焊industry frequency welding
- 单频机STC
- 工频炉main frequency furnace
- 感应式换频机induction type frequency converter
- 工频泵General Pump
- 短波电疗机，射频机radiofrequency machine
- 工频干扰power line interference
- 二频机抖激光陀螺抖动频率与温度关系的研究Research of the relation between dither frequency and temperature in mechanically dithered ring laser gyro
- 工频磁场power frequency magnetic field
- 二频机抖激光陀螺零偏的温度特性的逐步回归分析Analysis on temperature characteristic of mechanically dithered RLG's bias with a method of stepwise regression
- 工频参数power frequency parameter
