查询词典 hydrogen

Hydrogen can combined with metals easily with the formation of metalic hydroxides, in high temperature hydrogen will reduced these hydroxides back by binding with oxygen.

氢很容易与非金属元素化合，也能形成金属氢化物，在高温下氢能从许多化合物中夺取氧，使氧化物还原。

Separation and recovery process principles of tail gases in producing dimethyl phosphite were introduced; Separation and recovery courses of hydrogen chloride and methyl chloride in tail gases were also analyzed. The percent recovery for hydrogen chloride and methyl chloride is over 99.9% and 93%, respectively, by using the process of combining stage recycle of solvent with lower temperature.

介绍了亚磷酸二甲酯生产中尾气回收的工艺原理，对尾气中氯化氢及氯甲烷的分离回收过程进行了分析；提出了采用吸收剂分段循环和降温相结合的回收工艺，将此工艺应用于3万t/a的亚磷酸二甲酯的生产装置的尾气回收上，可使氯化氢的回收率达99.9%，氯甲烷的回收率达93%以上，盐酸质量分数大于30%，尾气中氯甲烷的质量分数小于5%。

In France in 1783 Montgolfier brothers made charge Egypt shortly after the hot air balloon, he made the first hydrogen filling of the balloons, in August 27 was the first time the ball off the charge of hydrogen. December 1, and N.

1783年在法国蒙戈尔费埃兄弟制成热空气气球后不久，他制成第一个充氢气的气球，在当年8月27日第一次实现了充氢气球升空。12月1日他和N。

Last year, the Analyzer of Space Plasma and Energetic Atoms aboard Venus Express showed that there was a great loss of hydrogen and oxygen on the nightside. Roughly twice as many hydrogen atoms as oxygen atoms were escaping.

去年，金星快车上的空间等离子体和能量原子分析器显示，金星背日面有大量的氢原子和氧原子的丢失，氢原子的遗失量大致是氧原子的两倍。

Hydrogen nitrate powder acidizing is to mix solid hydrogen nitrate powder and hydrochloric acid in certain proportions to generate strong oxidizing nitrosyl chloride, which can violently and locally dissolve rock and blocked material without destroying formation structure, to make through oil path and improve formation permeability.

硝酸粉末酸化工艺技术，是利用固体硝酸粉末与盐酸以一定的比例混合后，生成氧化能力很强的氯化亚硝酰。

Based on the Hmiltonian expression for hydrogen atom in combination with the theory proposed, the theoretical value s of the hydrogen atom's energy, ground state energy and spectrum constant and the electron orbital angular momentum are given.

根据氢原子的量子哈密顿量表示，结合创新的量子算符代数理论，得到氢原子的能量、氢原子的基态能量、电子轨道角动量、氢原子的光谱常数等各种物理量的理论值。

In order to improve the hydrogen storage properties of Ti2 alloys, over stoichiometry of A side and partial substitution of Mn by transition metals were adopted, and the hydrogen storage properties of Ti2(x=1.0, 1.1; M=V, Fe, Ni, Cu) alloys were investigated.

为改善Ti2AB2型合金的储氢性能，采用A侧过化学计量和过渡金属部分替代Mn进行多元合金化，系统研究了Ti2(x=1.0， 1.1； M=V、Fe、Ni、Cu)合金的储氢性能。

The experimental results indicate a luminescence enhancement effect of hydrogen by passivating certain defects in GaN. However, such effect must be realized by overcoming high migration barrier in GaN. In the experiments, low energy electron beam supports enough energy to hydrogen to diffuse and passivate defects in GaN.

研究表明氢原子在GaN中可以钝化缺陷来增强发光，但这种钝化缺陷的作用必须通过克服高的扩散势垒来实现，而低能电子束可以提供足够的能量使得氢原子克服扩散势垒来实现钝化作用。

The paper reviewed the current research progress and the main achievements of biohydrogen production technology research both at home and abroad,and described the hydrogen production mechanism s of main hydrogen producing organisms,such as phot.

本文综述了目前国内外生物制氢技术各个方面的研究进展和成果，并详细描述了光合产氢细菌及发酵产氢细菌等主要产氢生物的产氢机制。

The direct photodecomposition of hydrogen sulfide to produce hydrogen under ultraviolet light is studied in the sodium solution illuminated by the 10 W low-pressure mercury-lamp (λ= 253.7 nm) as illuminant.

以10 W低压汞灯（特征谱线波长，λ=253.7 nm，简称UVC）作为光源，硫化钠的水溶液作为反应介质，进行了UVC直接分解硫化氢制氢反应（简称UVC-H2S-H2）的研究。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48