单词 chromyl 释义 chromyl, n. Chem.|krmal, -ml|[f. chromium n. + -yl.]1. The divalent radical {b2}CrO2 . Usu. attrib.1868Jrnl. Chem. Soc. XXI. 514 In the course of an investigation..I had occasion to prepare a considerable quantity of pure chromyl dichlo...