lever for throwing the machine in-and-out-of gear

... lever for adjusting 调整杆 lever for throwing the machine in-and-out-of gear 机器传动离合杆 lever of crane 起重机臂 ...

throwing是什么意思... ... lever for throwing the machine in-and-out-of gear 机器传动的离合杆 oil throwing 油的喷淋 ...