单词	提高标准
释义	提高标准医upgrade
随便看	chain well chainwheel chain wheel chain-wheel chain wheel for hawse pipe chain wheel hob chain wheel shaft chainwheel, sprocket Chain wheel type skylight control gear chainwheel valve chainwheel with crank chain whell chain which intensity is higher chainwide chain wildcat windlass chain winch chain winding chain winding mechanism chain winding mechanismchain jack chain windlass chain wire chain/wire rope connector chainwise chainwise equivalence chain with automatic wiper mechanism,measuring