查询词典 boiling point

Not only can the method be used to predict haloenated propance,but can help to understand the quantitative relation between boiling point and molecular structure of halogenated propanes as well.

本文方法的提出，不仅在一定程度上揭示了卤代丙烷沸点与分子结构之间的定量关系，而且为工程上提供了一种预测卤代丙烷沸点的有效方法。

The conversion of alcohols to alkyl halides was investigated using acidic ionic liquid X as halogenating agent, acidic catalyst as well as medium. The reactions of primary alcohols gave very satisfactory conversions and selectivities except for the substrates with lower boiling point,such as n-octanol and benzyl alcohol. They obtained the corresponding halides with almost quantitative yields(95%-100%).The secondary alcohols also gave the corresponding halides with excellent conversions, however, the by-products of dehydration were detected.

伯醇除某些低沸点底物外，都以高转化率(最高达100％)和高选择性(最高达100％)转化为相应的氯代烃、溴代烃和碘代烃，例如正辛醇、苯甲醇，在X中进行卤代反应得到令人满意的结果，无论氯代、溴代还是碘代得到卤代产物的收率一般都很好华东师范大学化学系01级博士学位论文(95十100%)，极少有重排产物及脱水产物被检测出来。

Relevant conditions were optimized to ensure that most of trace elements evaporated steadily during laser ablation in layer-by-layer. So the impurity elements of low boiling point were determined successfully.

对分析条件进行了全面系统的优化，使高温合金中大多数痕量元素通过层层剥蚀的激光剥蚀过程被稳定地蒸发，从而顺利对低沸点杂质元素进行了测定。

These peroxides will concentrate during distillation due to their higher boiling point.

乙醇则是被广为使用及滥用的

Pressure cookers can do this because water's boiling point rises as it's pressurized.

压力锅可能做此，因为水的沸点上升，因为它加压了。

Tensions between the Uighurs and Han in Xinjiang reached a boiling point in July when Uighurs rioted in Urumqi.

在七月份，当维吾尔人在乌鲁木齐闹事时，维吾尔人和汉人在新疆的紧张关系达到了极点。

Petrol has a low boiling point; if a little is poured into the hand, it soon vaporizes.

汽油的沸点很低，如果在手中倒一点很快就会挥发掉。

Petrol has a low boiling point ;if a little is poured into the hand ,it soon vaporizes.

汽油的沸点很低，如果倒一点在手上，它会很快蒸发。

Petrol has a low boiling point;if a little is poured into the hand ,it soon vaporizes.

汽油沸点低，如果倒入少许在手上，它立即就蒸发掉

Petrol has a low boiling point; if a little is poured into the hand, it soon vaporizes.

汽油沸点低，如果8 tt t8.com 倒入少许在手上，它立即就蒸发掉。

So it was last week in Selma , alabama.

上星期在亚拉巴马州塞尔马市发生的事件也是这样一个转折点。

The group also spearheads various social programs in China.

该组织还带头参与中国的各种社会活动。