单词	knock at
释义	knock at 敲,击,叩
随便看	viscosity flow viscosity fluctuation viscosity fluid viscosity force viscosity friction viscosity function viscosity funnel viscosity gage viscosity gauge viscosity-gel viscosimeter viscosity gradient viscosity-gravity viscosity-gravity chart viscosity-gravity constant viscosity gravity constant viscosity gravity number viscosity-gravity number viscosity improver viscosity increaser viscosity increment viscosity-index viscosity index viscosity index blending value viscosity index chart viscosity index constituents 攀藤揽葛攀藤附葛攀蟾折桂攀车卧辙攀辕卧辙攀高接贵攀高结贵攀鳞附翼攀龙讬凤攀龙附凤 Danish danke Darjeeling dark dark horse darling darts dash dashboard data