Researches show that, the yield can reach 60 %, the method is safe, moderate and simple.

结果表明：该法收率达6 0 % ，具有反应条件温和、易操作等特点。

youdao

Researches show that, the yield can reach 60 %, the method is safe, moderate and simple.

结果表明：该法收率达6 0 % ，具有反应条件温和、易操作等特点。

youdao