“用溴”造句

方法: 用溴代及胺化反應(yīng)合成了四甲基吡嗪衍生物.
METHODS: The target compound was prepared by the bromination and amination reaction.

用溴—甲醇溶解Al_2O_3, 其回收率在91%以上.
If Al 2 O 3 is dissolved by Br 2 - CH 3 OH, its Recovery rate is above 91 %.

用溴比用氯時(shí)產(chǎn)出率高.
The yield was higher using bromine The yield was higher using bromine than chlorine.

• #用溴