常見例句

雙語例句

• Numerous improvements are obtained by employing the amine in molar excess with respect to benzyl halide, preferably in a molar ratio of 2 to 1.
  通過使用相對於芐基鹵爲(wèi)摩爾過量的胺可以得到大量改善， 優(yōu)選的摩爾比爲(wèi)2至1。
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