- supplementary speed reduction means
- 辅助: assist
- 减速装置: graduating device; reduction ...
- 辅助减速器: ancillary gearbox
- 及减速装置: reverse and reduction gear
- 减速装置: decelerating device; decelerator; demultiplicator; graduating device; means of retardation; reducing gear; reduction gear; reduction unit; retarding devices; speed brake; speed reducer; speed reduction
关注微信公众号：chachacidian，回复:辅助减速装置，即可在微信中查询翻译
