| 释义 |
单质dānzhì由同种元素组成的纯净物,如氢、氧、溴、汞、铁、铜等。有些元素可以形成不同的单质,如元素磷有白磷、红磷等单质。{simple substance; pure substance composed of one element, e.g. hydrogen, oxygen, bromine, mercury, iron, or copper. Some elements may form different simple substances, such as the element phosphorus, which may include red and white phosphorus.} |