three-throw crank

... three-terminal standard resistor 三端 (钮 )标准电阻器 three-throw crank 三连曲柄 three-throw crank shaft 三连曲柄 ...

什么意思_英语three... ... three-throw turnout 三开道岔 three-throw crank 三拐曲柄 three-throw switch 三投开关 ...