platinum black
名词 n.
英文释义
名词 n.
-
A soft, dull black powder consisting of finely divided metallic platinum obtained by reduction and precipitation from its solutions. It absorbs oxygen to a high degree, and is employed as an oxidizer.
— "In the meanwhile," remarked Carrados, "if you find the time hang heavy on your hands you might look up the subject of 'platinum black.' […] It is a chemical that has the remarkable property of igniting hydrogen or coal gas by mere contact," replied Carrados. "Think how useful that may be if you haven't got a match!"
0 次浏览
数据来源: Wiktionary