变压线频感应马达驱动器 variable frequency drives: 变频传动装置; 变频驱动器variable speed induction motor: 变速感应电动机variable-frequency induction tool: 变频感应测井仪variable frequency voltage: 变频电压line frequency induction beating: 线频感应加热下载手机词典可随时随地查词查翻译