查询词典 hydrogen

This paper mainly deals with the fact that the corrosion conditions of each system resulted from such materials as hydrogen,sulfuretted hydrogen,cooling water,ammonia as well as hydrogen chloride and some...

通过这种催化加氢精制的方法可以生产优质重整原料，提高柴油十六烷

Producing high purity chlorine dioxide by hydrogen peroxide method,several stabilize which can reduce the decomposition of hydrogen peroxide were studied DTPMP、PBTCA、HEDP are certained as the ideal stabilizer and the optimum amount of these three stabilizer are 0.6%,1.0%,0.6% of hydrogen peroxide amount respectively.

摘 要：采用过氧化氢法制备高纯度二氧化氯，研究了几种抑制过氧化氢分解的稳定剂。确定了DTPMP、PBTCA、HEDP三种稳定剂效果较理想，其最佳用量分别为反应液中过氧化氢质量分数的0.6%、1.0%、0.6%。

Inner Mongolia Rare nickel-hydrogen battery Bioko RE Transtech Services Limited is the holding of the Sino-US joint venture, registered capital of 32 million U.S. dollars, with an annual output of 7 million, or D-C-10 million nickel-hydrogen battery company Improve the management and technical research and development system, is currently China's largest rare earth nickel-hydrogen battery production enterprises.

内蒙古稀奥科镍氢动力电池有限公司是稀土高科控股的中美合资企业，注册资本为3200万美元，可年产700万只D型或1000万只C型镍氢动力电池；公司拥有完善的经营管理及技术研发体系，是目前国内最大的稀土镍氢动力电池生产企业。

The results show that T225NG Ti-alloy has good property of resisting hydrogen brittleness in atmosphere and in loop water. Hydrogen brittleness of T225NG Ti-alloy is hydride brittleness. This is due to the forming of hydride caused by a large amount of hydrogen dissolved in and oxide film on the surface of T225NG ...

研究结果表明：T225NG钛合金在空气和高温高压高纯水的环境下具有良好的抗氢脆性能； T225NG 钛合金的氢脆属于氢化物脆性，这是由于T225NG钛合金中渗入的氢导致氢化物的析出引起的；T225NG钛合金表面氧化膜对它优良的抗氢脆性能起了决定性的作用。

The industrial method for making hydrogen are:(1) Water electrolysis, with nickel plating 15% of the iron electrode electrolytic potassium hydroxide solution;(2) from natural gas or liquefied petroleum gas system for hydrogen cracking;(3) water gas law, namely the system of hydrogen from coke or anthracite.

氢气的工业制法主要有：（1）水的电解，用镀镍铁电极电解15％的氢氧化钾水溶液；（2）从天然气或裂解石油气制氢气；（3）水煤气法，即从焦煤或白煤制氢气。

Multiple-paths hydrogen abstraction reactions of fluorine -with CH_3OH have been investigated at the MP2/6-311 ++ g level. The potential energy surfaces for H-abstraction reaction from carbon atom and oxygen atom were given respectively. The results indicate that there is only one minimum energy path for hydrogen abstraction from carbon atom, while multiple paths were found for hydrogen abstraction from oxygen atom. All the stationary structures, frequencies as well as PES sketch of all channels were given, in which the dominant channel is by a five-member ring transition state. The calculated heat of reaction is 170.62 kj/mol for channel 1, 119.41 kJ/ mol for branch channel 6. The results are in good agreement with experimental data.

以MP2/6-311 ++g水平上详细研究了氟原子与甲醇抽氢反应的多通道反应机理，得到了各条通道中涉及的驻点的构型和振动频率及其能量，给出了两张完整的反应势能面，结果表明，氟原子从C原子上抽氢时有一条明显的最低能量通道，而从氧原子上抽氢时要涉及多条分支通道和多个驻点构型，给出了各分支通道势能面示意图，结果表明以形成五元环状过渡态通道为优势通道，计算得到经途径1生成CH_2OH时反应放热170.62kJ/mol，经分支途径6生成CH_3O自由基时反应放热119.4 kJ/mol，此结果与实验值一致。

Theoretical calculations on a series of N-H…O=C hydrogen bond trimers were carried out using the MP2 method. We investigated the effect of substituents in hydrogen bond donor molecules on their hydrogen bond strength.

使用MP2方法研究了氢键三聚体中N-H…O=C氢键强度，探讨了氢键受体分子中不同取代基对N-H…O=C氢键强度的影响。

Acid in high-acid foods may react with the iron of the can to release hydrogen and generate a hydrogen swell. Hydrogen sulfide production by Desulfo. tomaculum can cause sulfur stinkers

在高酸的食品中的酸可以和罐头中的铁发生反应生成氢气而产生膨胀，由脱硫肠状菌产生的氢人氢能导致含硫磺的恶臭物质的形成。

The results indicated that BaCe0.8Ho0.2O(subscript 3-α) sinters are of single-phase structures of orthorhombic perovskite. In the temperature range of 600~1000℃, the nonstoichiometric materials (x=1.03 and 0.97) have higher conductivities in wet hydrogen and wet air and better performances of hydrogen-air fuel cells than the stoichiometric one (x=1). In this series, BaCe0.8Ho0.2O(subscript 3-α) has the highest conductivities 2.10×10^(-2Scm^(-1) in wet hydrogen, 3.46×10^(-2) Scm^(-1) in wet air, at 1000℃ and the maximum power output density 122 mWcm^(-2 at 1000℃.

结果表明，在600~1000℃温度范围内、湿润氢气和湿润空气气氛中，该系列材料的电导率随温度和钡离子含量的变化均与以该系列材料为固体电解质的氢－空气燃料电池性能随温度和钡离子含量变化的次序一致，即：非化学计量组成材料BaCe0.8Ho0.2O(下标 3-α)(x=1.03， 0.97)具有较化学计量组成材料BaCe0.8Ho0.2O(下标 3-α)(x=1)高的电导率和氢－空气燃料电池输出功率密度，其中BaCe0.8Ho0.2O(下标 3-α)有最高的电导率（1000℃时、在湿润的氢气气氛中：2.10×10^(-2)Scm^(-1)；在湿润的空气气氛中：3.46×l0^(-2)Scm^(-1)）和最大的氢－空气燃料电池输出功率密度（1000℃时：122mWcm^(-2)）。

With fuels of hydrogen and hydrogen-ethylene mixture in the wind tunnel heater, experiments to study hydrogen combustion in scramjets were carried out.

本文选择氢气及氢气－乙烯混合气体两种燃料在风洞加热器中加热空气来开展氢气燃烧的研究实验。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。