可萃取物质 meaning in English

extractable material
extractable matter

Determination of extractable matter in textiles - method
纺织品中可萃取物质的测定.方法
Plastics . determination of matter extractable by organic solvents conventional methods
塑料制品.用有机溶剂测定可萃取物质
Optics and optical instruments - contact lenses - method for determination of solvent extractable substances
光学和光学仪器.接触镜片.溶剂可萃取物质的测定方法