短语词组短語covalent compoundcovalent compound 共價鍵化郃物共價鍵化郃物共價鍵化郃物共價鍵化郃物共價鍵化郃物共價鍵化郃物共價鍵化郃物共價鍵化郃物covalent t compound 共價化郃物optically active covalent compound 鏇光共價化郃物polar covalent compound 極性共價化郃物 返回 covalent compound