Its metallation and addition to cyclopentanone proceeded well to 40.其金属取代物能和环戊酮顺利地反应得到40.Cyclopentanone ethylene ketal was synthesized with I _ 2 as catalyst.以单质碘为催化剂合成了环戊酮乙二缩酮.Methyl dihydrojasmonate was synthesized fro...
The sea wall sustains the shock of the waves.海堤能抵挡海浪的冲击.The breakwater sustains the shock of the great waves.防波堤承受巨浪的冲击.This novel sustains the reader's interest to the end.这部小说使读者到最后都依然兴趣浓厚....