查询词典 methane

And then methanesufonic acid which is colorless and oderless is obtained by the hydrolysis of methane sulfonyl chloride at 70～90℃.

以硫、硫化钠、硫酸二甲酯为起始原料制备了二甲基二硫，然后用氯气氧化二甲基二硫得甲烷磺酰氯，经水解合成了甲烷磺酸，产品无色无味。

It could be composed of 50 to 75 percent methane, 20 to 50 percent Carbon dioxide, around 10 percent Nitrogen, and less than 3 percent Hydrogen, Oxygen and Hydrogen sulphide.

它于50至75 ％的甲烷， 20至50％的二氧化碳，约有10 ％的氮，不到3 ％的氢，氧和氢硫化物等组成。

But they are not ruling out a host of other possible factors, including methane, carbon dioxide, the number of meteors seeding the upper atmosphere, and even the 11-year sunspot cycle.

我认为科学家们仍然在研究这个现象"，托马斯说，"我们仍在为搞清楚这些云的成因及其变化而努力。

Now that the Southern Hemisphere's summer on Neptune is coming to a close, Orton and his colleagues predict that as the north pole turns sunward, an abundance of methane will leak out of that pole once it becomes warmer in about 80 years.

现在海王星南半球的夏季就要结束了，奥顿及其同事们预计，随着其北极开始朝向太阳，在约80年后，一旦那里变得较为温暖，大量的甲烷也将从北极泄露出去。

Arrow has some of the largest coal-bed methane reserves located in Queensland's Bowen and Surat Basins.

Arrow拥有昆士兰Bowen与Surat盆地中最大的几个煤层气矿藏。

The high methane abundance is telling us something," said Swain."

这个信息告诉我们，HD 209458b的大气成分以及星球构成比较特殊点。

The transverse content of coalbed methane is high in the axis of the syncline and low in the edge at present.

在横向上，煤层现今含气量总体上表现为向斜边缘较低而核部较高的特点。

A satisfactory theory must be able to explain why in methane the HCH angles all have the characteristic tetrahedral value.

一个完满的理论必须能够解释甲烷中为什么所有HCH角都具有四面体的特性值。

Methods Naloxone was synthesized starting from oxidation of thebaine, followed by hydrogenation, acylation, cyanidation, O-demethylation, hydrolyzation and N-allylation. The alternative method of O-demethylation, methane sulfonic acid/DL-methionine and hydrobromic acid were investigated.

在以蒂巴因为原料，经氧化、氢化、酰化、氰化、去氧甲基、水解、N-烯丙基化得到纳洛酮的合成路线中，分别采用甲磺酸／DL-甲硫氨酸和氢溴酸代替三溴化硼进行去氧甲基化和后续水解反应。

Uses the Boehm titrate and the XPS experiment method, to the coal tar and the methane around responded coked the superficial structure to carry on the determination.

采用Boehm滴定和XPS实验的方法，对煤焦与甲烷反应前后煤焦表面的结构进行了测定。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。