词汇	Hardness of richter scale
释义	Hardness of richter scale 里氏硬度
随便看	preparative predicate object verb Preparative procedure preparative process preparative radiation chemistry Preparative regimen preparatives preparative scale preparative scale chromatography preparative scale chroma tography preparative-scale gas chromatography preparative scale plate number preparative scale sample preparative separation preparative stage preparative starch block paper electrophoresis preparative technique preparative technology preparative thin layer chromatography preparative thin-layer chromatography Preparative TLC preparative treatment preparative ultracentrifugation preparative ultracentrifuge preparative ultra-centrifuge preparative zone electrophoresis