- constant speed drive
- 恒速: constant speed; constant vel ...
- 传动装置: transmission; gearbox; geari ...
- 恒速传动装置滑油: constant-speed drive oil
- 变速传动装置: speed gear; speed transformation transmission; speed transforming transmission; variable speed drive device; variable speed drives; variable-speed drive
- 加速传动装置: gear up
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