查询词典 tris nitro-methane

A comparison of the computation results with traditional results for methane combustion proves that the new method more convenient and efficient.

热力系统平衡态的计算不论是对火焰发展的计算结果还是实验结果都是指示其正确与否的标准，与传统计算平衡态方法相比，元素势能法更简便易行，并且更精确。

Typical optimum deposition conditions included supersonic pretreatment of silicon substrate with diamond paste, decreasing of methane concentration, adding a little oxygen into the reactive gases and altering of temperature in the process of nucleation and growth.

使用的优化生长条件包括：金刚石砂液超声振荡处理衬底、低甲烷浓度、反应气体加氧以及改变成核和生长温度等等。

For the study on the disk-shaped membrane reactor, the catalytic performance ofSCFZ membrane material in a fixed-bed reactor, the oxygen permeability of SCFZmembranes in air/He gradients, and the catalytic results of methane in the membranereactors with or without NiO/〓 catalyst packing were investigated in details.

在片式膜反应器研究方面，系统考察了SCFZ膜材料在固定床反应器中的催化性能、SCFZ片式膜在Air／He气氛下的氧渗透性能、以及填充和不填充NiO／〓催化剂的片式膜反应器的甲烷催化反应结果。

Coal seam methane well ; drilling technology ; non-linear contact analysis ; Downhole Hammer Drilling ; rotary drilling

吉林大学；张龙飞煤层气井；钻井工艺；非线性接触分析；潜孔锤钻进；回转钻进

Their technology and process is basically similar to that used ethylene, the raw material for the oxygen in the silver catalyst, caused by methane or nitrogen stabilizer, the existence of inhibitors of chloride, ethylene oxide directly generate ethylene oxide and ethylene B N and further to certain substances in water than in the tubular reactor for generating hydration ethylene glycol, ethylene glycol solution through evaporation to mention thick, dehydration, fractionation be ethylene glycol and other by-products.

它们的工艺技术和工艺流程基本上相似，即采用乙烯、氧气为原料，在银催化剂、甲烷或氮气致稳剂、氯化物抑制剂存在下，乙烯直接氧化生成环氧乙烷，环氧乙烷进一步与水以一定物质的量比在管式反应器内进行水合反应生成乙二醇，乙二醇溶液经蒸发提浓、脱水、分馏得到乙二醇及其他副产品。

Selective oxidation of methane and light alkanes is one of the most challenging problems in terms of heterogeneous catalysis and surface s...

甲烷和低碳烷烃选择性氧化是多相催化和表面科学领域最具挑战性的前沿研究课题之一。

Selective oxidation of methane and light alkanes is one of the most challenging problems in terms of heterogeneous catalysis and surface science.

甲烷和低碳烷烃选择性氧化是多相催化和表面科学领域最具挑战性的前沿研究课题之一。

State-of-the-art systems report producing biogas that is more than 95% pure methane.

最新系统报告产生的沼气中甲烷的含量超过 95%。

It is found that the hydrogen composition of the biogas is about 43%~69% and no methane is detected.

生物气中氢气的体积分数为43%~69%，无甲烷。

Latest researches in the catalysts for synthesis of carbamate by ammonolysis of dimethyl carbonate;2. Progress in the catalysts for synthesis of carbamates by ammonolysis of dimethyl carbonate;3.4,4′-Methylene diphenyl carbamatewas synthesized by ammonolysis of dimethyl carbonate, a substitute of phosgene, and 4,4′-diaminodiphenyl methane with anhydrous zinc acetate as catalyst.

用碳酸二甲酯代替光气，以4，4′-二氨基二苯基甲烷为原料，在无水醋酸锌催化剂的作用下，经胺解反应合成了4，4′-二苯甲烷二氨基甲酸甲酯；测定了MDC的熔点；采用傅里叶变换红外光谱和氢核磁共振对产品结构进行了表征；考察了反应温度、DMC用量、反应压力、反应时间、催化剂用量对MDC收率的影响。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。