a substance capable of bringing about the reduction of another substance as it itself is oxidized; used in photography to lessen the density of a negative or print by oxidizing some of the loose silver
例句
用作名词 (n.)
Reductant from an extraneous source is introduced. 外来的还原剂被引进来。
Hydrogen sulphide bearing gas or water is postulated to be an important reductant in several areas. 含硫化氢的气体和水被认为是某些地区的一种主要的还原剂。
美
[rɪ'dʌktənt]
