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So it is the major tendency of preparing amine.

本次实验的目的产物是邻甲苯胺。

In this paper, A new technique for increasing the stability of calcium chloride ammoniate—Carbonation forming salt in situ coating technique,has been studied.

对无水氯化钙与液氨的反应产物的稳定性进行了研究,提出了改进CAC稳定性新技术—碳化法原位成盐包膜技术。

The test indicates that reaction temperature is higher, reaction time is longer and nitrogen content is lower than those when technical lignin material is used. Efficiency of ammonification with peroxide of hydrogen as an oxygenant is higher than that with oxygen as an oxygenant.

实验表明天然木质素原料氨化的反应温度比工业木质素高,反应时间较长,氨化产物的含氮量较低(含氮量为3.9%-6.7%;用过氧化氢作氧化剂比用氧气作氧化剂,氨化效率高。

It is found that the particle size may be controlled by modulating the quantities of nitric acid and ammonium hydroxide, the quantities of the residues carbonate ions are affected by the quantities of the citric acid and ethylene glycol.

通过调节硝酸和氨水的用量可以控制粉体的粒度,柠檬酸和乙二醇的用量影响产物中碳酸盐的含量。

One kind of composite with redox activity was prepared by ammonolysis of 3,4,9,10-perylenetetracarboxylic dianhydride,o-phenylenediamine and variable valence transition metal ions of Co~(2+).

利用苝四甲酸酐与1,3-丙二胺的胺解产物、邻苯二胺、变价过渡金属离子Co~(2+)制备了新型具有电化学活性的物质,该物质电子传输性能好,电极反应可逆,可以作为电化学活性探针使用,而且因其含有很多氨基,便于进一步结合纳米金。

He catalytic properties of TiO_2/SiO2 were closely related with the state oftitania, and the TiO_2 species in the form of amorphism was responsible for thesynthesis of MPO and DPO.

iO_2在载体表面的存在状态是影响负载型TiO_2/SiO2催化剂活性的关键因素,TiO_2以无定形单分子层高度分散在催化剂表面时,有助于目的产物的生成。

Since the production of carbon nanotubes synthesized by arc-discharge method contains impurities such as carbon nano-particles, amorphism carbon and graphite fragment, several purification methods were used to purify carbon nanotubes. It is found that with oxidation method in air, we can easily get purified carbon nanotubes.

由于用电弧放电法合成出来的纳米碳管产物中除了有纳米碳管外,还含有一些纳米石墨颗粒、无定形碳和石墨碎片等,因此本文对用电弧放电法合成出的纳米碳管进行了多种方法、探索性的提纯研究,实验结果发现,利用大气氧化法对纳米碳管进行提纯效果好,设备简单,是一种方便实用的方法。

Objective To study the distribution of methamphetamine and its metabolite amphetamine in guinea pigs tissues.

目的研究甲基苯丙胺及其代谢产物苯丙胺在急性中毒豚鼠体内的含量分布。

The distribution of the newlyformed minerals and melt is restricted by the texture of the started amphibolite.

斜长角闪岩的原岩结构决定了实验产物中新生矿物和熔体的分布。

Based on the mineral distribution and assemblage in the run products at 1035 GPa and 950 ℃ for 20300 h, the textural development of amphibolite during the partial melting process, the metamorphic reaction, and the garnet corona generation are discussed.

依据实验产物的矿物组合和新生矿物的分布特征,讨论了950℃、10~35 GPa、恒温(20~300 h)条件下,斜长角闪岩部分熔融过程的结构变化、变质反应以及石榴石冠状体的成因。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力