“二氯”造句
乙烯和反式
二氯乙烯在红外光谱的这个区域都无活性.
Ethylene and trans - dichloroethylene are both inactive in the infra - red in this region.
这是冷却,滤出沉淀的
二氯碘化铯.
It is cool and filter the precipitated caesium dichloroiodide.
反应器和输送管线被用少量
二氯甲烷洗涤几次.
The reactor and transfer line are rinsed with several small portions of methylene chloride.