查询词典 hydrogen sulfide

When combined by heavy chromate-sodium hydrogen sulfite and by silane couplant, rapidly quenched NdFeB permanent magnetic particles, can form passive pycho-film (containing Cr〓O〓) and silane composite coating, which can improve greatly its oxidation resistance of NdFeB particles and increase the magnetic properties of bonded NdFeB Permanent Magnetic Composite .

采用重铬酸盐钝化-亚硫酸氢钠还原与硅烷偶联剂处理相结合来包覆处理快淬NdFeB永磁粉，能在快淬NdFeB表面形成致密的含Cr〓O〓钝化膜/硅烷复合涂层，它们显著地改善了快淬NdFeB的抗氧化性并提高了粘结NdFeB永磁复合材料的磁性能，并与其它的NdFeB包覆处理工艺所获得的涂层进行了比较。

Hydrogen peroxide as the matrix of the sample is decomposed by refluxing in alkaline medium.

对过氧化氢中的阴离子限量要求，因其用途各异而不同。

Hydrogen is also one of the coolest refrigerants.

氢是温度最低的冷冻剂。

Inhibitors are added in the green sand mold to avoid the moisture from reacting with the magnesium melt, resulting in forming magnesia slag and hydrogen formation.

故而本实验将比较使用不同的抑制剂，包括十二烷基磺酸钠、硼酸、硫磺、与氟硼酸钾等对於AZ91镁合金铸件外观之研究。

Is trying to trick green algae into producing hydrogen instead of sugars when they perform photosynthesis.

奇若蒂在美国科罗拉多州的国家可再生能源实验室里对绿藻进行研究的目的是什么？

Based on the comparison of coal desulfurization effects of several kinds of oxidants,the mixed oxidant of glacial acetic acid and hydrogen peroxide was selected as the best.

在用多种氧化剂对煤炭脱硫效果进行比较研究的基础上，筛选出脱硫效果最好的冰醋酸与过氧化氢混合物氧化剂。

The effects of reaction temperature, reaction time, the quantity of glacial acetic acid, the quantity of hydrogen peroxide and the quantity of magnesium sulfate anhydrous on the results of experiment are investigated.

探讨了该工艺的可行性，分别考察了反应温度、反应时间、冰醋酸用量、过氧化氢用量以及无水硫酸镁用量对实验结果的影响。

The effects of various influence factors, such as the amounts of glacial acetic acid, hydrogen peroxide and catalyst, reaction temperature, reaction time were discussed.

采用过氧乙酸法制备环氧棕榈油，研究了乙酸、双氧水、催化剂用量以及反应温度、反应时间对环氧值的影响。

There are, however, a few drawbacks to hydrogen fuel cell vehicles.

有，但是，有少数的弊端，以氢燃料电池的车辆。

Hydrogen energy and fuel cell development are closely related to the control of CO2 emissions.

氢能和燃料电池的发展是与控制二氧化碳排放紧密相关的。

The graph of a concave function is always below its tangent.

一个凹函数的图象总在它的切线的下方。

We come to the second step: cut through the complex to find a solution.

就算我真正发现了问题所在也不过是迈出了第一步。