质剂 meaning in English

modification agent

General purpose ldpe film modifier ： degradable garbage bags which generate less heat , flat yarn , inner film for laminated
Ldpe膜泛用型改质剂：如发热量低之环保垃圾袋、薄膜扁纱、包装膜内衬膜、购物袋及胶布等。
A substance , such as boron , added in small amounts to a pure semiconductor material to alter its conductive properties for use in transistors and diodes
掺杂质，掺质剂加入纯半导体材料中的少量硼等物质，用于晶体管和二极管中以改变半导体的导电率