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Bromoethyl benzene was synthesized by anti-Markovnikov addition of hydrogen bromide to styrene under ultraviolet light irradiation.

在紫外线的照射下,苯乙烯与溴化氢气体发生反马氏规则自由基加成反应,可合成β-溴乙苯。

The mixture, incubated at rather less than body temperature, produced carbon dioxide and hydrogen but no pollutants.

这种混合,在低于体温的环境中发生反应,产生二氧化碳和氢气,但没有污染。

The fermentation temperature was 60℃. The major fermentation products were ethanol, acetic acid, hydrogen and carbon dioxide.

直接发酵纤维素产乙醇的初步研究、发酵于60℃下进仃,其主要产物为乙醇、乙酸、氢气和二氧化碳。

Gas phase synthesis of hydrogen iodide was taken for example.The example showed how to calculate extent of reaction from equilibrium constant and to calculate the heat capacities at constant pressure and constant volume.

以碘化氢气相合成反应为例,说明如何由化学反应的平衡常数计算平衡反应进度,进而计算定压热容和定容热容。

Water is made up of oxygen and hydrogen .

水是由氧气和氢气组成的。

Under syngas or pure H2, methyl formate hydrogenolysis was carried out over ultrafine CuO-BaO/SiO2 catalysts with various copper content,which had been previously investigated by TEM,BET and TPR techniques.

研究了在合成气或纯氢气气氛下CuO-BaO/SiO2催化剂甲酸甲酯氢解反应活性的变化,并对催化剂进行了TPR、TEM和BET表征。

Based on the analysing of gating system and the sources of slag and the experiments on hydrokinetics of meltal with hydroen bubbles,it is believed that the most important function of filter in gating system are t cleaning of melt metal and the changing of characteristics of the liquid metal flow.

对浇注系统、夹杂产生物来源及金属液体流态进行分析,氢气泡流体动力学实验表明,在浇注系统中过滤器的主要功能是对液态金属产生"整流"净化作用。

Compared with other gas discharge switches, such as gas spark gap, vacuum switch, hydrogen thyratron and ignitron, the parameters of PSS, such as hold-off voltage, peak current, rate of current rise, lifetime, time delay, jitter, have been greatly improved.

伪火花开关与其它气体放电开关如高气压火花间隙、真空开关、氢气闸流管及引燃管等相比,开关的各项参数如耐受电压、峰值电流、电流上升陡度、寿命、时延和抖动都有了较大改善。

It is still unknown which star or stars ionize the red-glowing hydrogen gas.

现在还不知道哪颗恒星或者是哪些恒星电离了发红光的氢气。

The results show that the method of metallization of silk fabric by hydric plasma can obtain the anti-radiation silk.

结果表明,用氢气等离子体还原处理,能够获得具有适当导电性的镀银膜真丝纤维。

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推荐网络例句

I didn't watch TV last night, because it .

昨晚我没有看电视,因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。

I'm running my simile to an extreme.

我比喻得过头了。