two-speed adapter lever

英语单词lever是什么意思，... ... two-position lever 二位式握柄[手柄] two-speed adapter lever 双连接头杆 tyre lever 装胎杆 ...

调速阀... ... ) governor valve stem 调速阀杆 ) two-speed adapter lever 双速接头杆 ) stem valve coupling 推杆阀快换接头液> ...