您要查找的是不是：
- 撑杆形式brace rod style
- 气弹簧撑杆Air spring support
- 玻璃纤维撑杆Fibre-glass pole
- 抓斗撑杆失效failure of clamp bucket brace
- 助力helping hand; help; assistance
- 撑support
- 螺杆screw
- 撑杆-系杆理论strut - pier theory
- 钻杆drill pipe
- 球杆cue
- 丝杆screw mandrel
- 斜撑inclined strut
- 蜗杆worm
- 摇杆rocker
- 顶杆mandril
- 支撑杆knighthead
- 摆杆swing stem
- 阀杆valve handle
- 高尔夫球杆brassie
- 锚杆roof bolt
