泵传动齿轮箱驱动带轮
pump drive gearbox drive sheave
地面驱动行星齿轮车轴
ground drive planetary axle
滚筒驱动齿轮箱检视塞
roller drive gearbox access plug
滚筒驱动齿轮箱润滑油油面
roller drive gearbox oil level
平衡重驱动齿轮花键
balance weight drive gear spline
传动齿轮箱驱动叉架
transfer gear box drive yoke
全密封齿轮齿条传动机构
canned rack and pinion drive
蜗线斜齿轮驱动
spiral level [gear] drives