- 缓冲: buffer; cushion; slow down a ...
- 筒: a section of thick bamboo
- 调整: adjust; tune-up; trim; trimm ...
- 螺钉: nut bolt; screw; screw faste ...
- 调整螺钉: adjust screw; adjustable screw; adjusting screw; plusminus screw; regulating screw
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