- gearbox; wheelbox gear casing; gear (set) case
- 齿轮: cogwheel; gear wheel wheel-l ...
- 箱: chest; box; case; trunk
- 交换齿轮箱, 变速齿轮箱, 挂轮箱: change gear box
- 变换齿轮箱: change gear box
- 变速齿轮箱: change gear case; change speed gear box; change-speed gear box; speed change gear box; speed-change gear box
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