掺假物；掺杂物

нежелательная примесь

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

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.

只有不掺杂任何杂质，味道最单纯的酒，才是最好喝的酒。

Только так можно насладиться настоящим вкусом.

外来物质, 杂质

инородный материал

水泥沙浆任一种用各种原料混合出的混杂物质，如沙浆和灰泥

Any of various combined substances, such as mortar or plaster, formed by mixing ingredients.

吸气剂以少量加入化学或冶金过程中用来吸收杂质的物质

A material added in small amounts during a chemical or metallurgical process to absorb impurities.