单词	一種水甲蟲
释义	同DYTISCUS
随便看	overhead travelling cleaner over-head travelling crane overhead travel(l)ing crane overhead travel(l)ing crane overhead travelling crane overhead travelling crane with crab overhead travelling crane with hoist overhead travelling crane with rope trolley overhead travelling crane with shuttle girder overhead travelling crane with slewing man-trolley overhead travelling stacking crane over head trolley overhead trolley conveyor overhead-type crane overhead-underground network overhead valve overhead valve engine overhead-valve engine overhead valve 顶阀 overhead vapor overhead variance overhead walkway overhead welding overhead welding；upward welding over-head wire