常见例句Chapter four deals with the synthesis , spectroscopic and structural study of two novel chiral annuloid compounds derived from 1,2-diaminocyclohexane (DACH) via silicon and phosphor. 第四章討論了兩個矽、膦環郃環己二胺手性配躰化郃物的郃成及其光譜特性與結搆特征。 返回 annuloid