The C_9 unit empirical formula of MWL was: C_9H_(8.35)O_(3.61)(OCH_3)_(1.342), with 0.35 Ph-OH and 1.342 methoxyl group in each C_9 unit.是什么意思_The C_9 unit empirical formula of MWL was: C_9H_(8.35)O_(3.61)(OCH_3)_(1.342), with 0.35 Ph-OH and 1.342 methoxyl group in each C_9 unit.在线翻译_英语_读音_用法_例句