mainsn.总线;主要管道名词main的复数形式.
mains fluctuations电源波动
mains power supply电力网供电,系统供电
Mainstee evaporator梅因斯提蒸发器
mains power failure电源电力故障
mainshaft snap ring主轴开口环
mains connection set电源设备
mainshaft oil baffle主轴挡油圈
mainshaft thrust cap主轴推压盖
mainspring cock jewel条上钻
mains voltage heating干线电压加热