asymmetrical bivalent不对称: asymmetric; unsymmetric; dis ...二价: divalent; bivalence; bivalen ...体: body; part of the body不对称二苯肼: asym-dipheny hydrazine不对称二甲基肼: unsymmetrical dimethyl hydrazine下载手机词典可随时随地查词查翻译
