查询词典 tris nitro-methane

Based on the research of the literature from home and abroad, this experiment was to study methods and models of rapidly estimating methane emission value of beef cattle and fertilizer value of beef cattle slurries, which would provide some theoretical support for controlling the output of animal wastes and harmless resource utilization of animal manures as well.

本研究在参考国内外相关文献资料的基础上，从理论的角度出发，以肉牛为研究对象，通过大量的试验，较系统地研究了肉牛废弃物排放的快速预测方法和模型，为有效控制畜禽废弃物的排放以及对畜禽粪便资源进行无害化、资源化利用提供了基础依据。

Formaldehyde, methanol and methane have been utilized as methylating agents.

甲烷、甲醇和甲醛可用作反应的甲基化试剂。

Therefore,we try to directly couple the endothermic reaction of long chain alkane dehydrogenation with the exothermic reaction of methane catalytic combustion by using the metallic monolithic catalysts,which highly miniaturizes reactor size and significantly increases heat efficiency.

因此，本文以长链烷烃脱氢和甲烷催化燃烧为模型反应体系，利用金属基整体式催化剂将上述吸热与放热催化反应直接进行热耦合，以期实现工艺过程的高度集成并提高热利用效率。

And methane, though it burns more cleanly than coal, absorbs a wider range of wavelengths of the Earth's outgoing radiation than CO2. It therefore traps more heat, making it an even more pernicious greenhouse gas.

而且虽然甲烷燃烧起来比煤更清洁，但它吸收地球发出的辐射线的波长，比CO2吸收的范围更广，因而它吸收更多的热量，使得它成为一种更有害的温室气体。

To determinate the concentration of TiO_2 in functional fiber for labeling purpose,the sample was nitrified with burning and dissolved in mix acid as pretreatment and then its concentration of TiO_2 was determined by spectrophotometric method with ascorbic acid as shelter reagent of Fe~(3+) and Cu~(2+) and diantipyryl methane as developer at wavelength λ=390 nm.

针对功能纤维中添加TiO2的含量测定问题，对功能纤维样品采用高温消化、混酸溶解的前处理方式，以抗坏血酸作Fe3+、Cu2+的掩蔽剂，二安替比林甲烷作为显色剂，用分光光度法在λ=390 nm波长处测定功能纤维中纳米TiO2的含量。

These results indicate that root oxidizes mostly cause difference of methane transport rate in rice varieties.

这说明根氧化力是造成品种间甲烷传输速率不同的主要原因。

Finally, a density functional theory study has been conducted to investigate the reaction mechanism of synthesis of oxygenates and higher hydrocarbons from methane and carbon dioxide at a molecular level for the first time.

本文还采用密度泛函理论，首次系统地从分子水平上研究等离子体直接转化甲烷、二氧化碳为各种含氧化合物、高碳烃的机理。

Methods of methane emission from rice paddies.

水稻田甲烷的减排方法研究及评价。

About 10 to 25 percent of the world's methane emissions come from flooded rice paddies.

全球大约10-25%的甲烷来自于水稻田。

Now there's new focus on a pair of methane sources that we usually don't think of as natural polluters: wetlands and rice paddies.

现在两个过去不认为是自然污染源的甲烷气体排放源又成为了关注的焦点，即湿地和稻田。

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。