出典:Wiktionary
出典:『Wiktionary』 (2017/03/20 16:14 UTC 版)
phosphogypsum (uncountable)
出典:Wikipedia
出典:『Wikipedia』 (2010/12/30 18:07 UTC 版)
Phosphogypsum refers to the gypsum formed as a by-product of processing phosphate ore into fertilizer with sulfuric acid.