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distilling tube相关的网络例句

查询词典 distilling tube

与 distilling tube 相关的网络例句 [注:此内容来源于网络,仅供参考]

The preparation method comprises the following steps in sequence:(1) metric acetonitrile is added into a dual-bottleneck distilling flask that is provided with a refluxing and condensing tube, and simultaneously, long-chain dialkyl methyl tertiary amine and relevant saturated dihalide are added thereof;(2) nitrogen is pumped for 10 to 20 minutes for deoxidizing;(3) a magnetic mixing reaction is carried through for 10 to 15 hours under the condition of 78 to 83 DEG C.

其制备方法依次包括以下步骤:(1)在装有回流冷凝管的二颈蒸流烧瓶中,加入计量的乙腈,同时按一定比例加入二长链烷基甲基叔胺与相应的二卤代烷;(2)通氮气10-20分钟,排除氧气;(3)在78-83℃条件下磁力搅拌反应10~15h。

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

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Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。