您要查找的是不是：
- 光杆NPbare NP
- 光杆feed rod
- 光杆吊环polish rod clamp
- 光杆衬筒polished rod liner
- 螺杆screw
- 暮光evening twilight
- 支撑杆knighthead
- 避光lucifuge
- 摆杆swing stem
- 流光streamer
- 锚杆roof bolt
- 卖光sell up
- 笔杆pen-holder
- 螺杆泵screw pump
- 剥光unclothe
- 支杆pole support
- 光是植物生长的促进因素。Light is a stimulus to growth in plants.
- 不透光的lighttight
- 拨杆dog driver
- 保险杆humper
