查询词典 hydrogen chloride

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。

WonTen Oxy-Hydrogen generators separate clean, soft water (H2O) into hydrogen and oxygen gases using a small amount of electric power via our patented process and recombine them into an efficient mixed-gas fuel. With the right combination of oxygen and hydrogen gases, our generators avoid an oxidizing flame, which means there are no carbon emissions, no greenhouse gases, no toxins and no pollutants!

氢氧焰能源设备运用少许电力即可将水转换为氢与氧，经混合后成为高效率的燃料，免除运送与储存问题，安全、无毒、无污染，并解决了替代能源所面临的高成本问题，只要有水就有能源，随时可再生，环保、节能，经济效益庞大且技术应用广泛！

The hydrogen vent line is being reattached to the external fuel tank. The vent line carries gaseous hydrogen away from the launch pad to the flare stack, where the vented hydrogen is burned off.

北京时间3月13日消息，据国外媒体报道，美国宇航局已开始在线直播有关国际空间站外景象的视频，但欣赏这种直播是有条件的，网民必须等到空间站工作人员睡觉或者下班的时候。

According to a report in Battery Bimonthly, there is an annual market demand of 40,000—50,000 tons of hydrogen storage alloy powder in the world, and the annual demand of hydrogen storage alloy for common Ni-MH chemical battery in China is around 8,000 tons, however the annual output is less than 5,000 tons. At present, demands of hydrogen alloys for Ni-MH chemical batteries are increasing by over 30% in each year and there is still a big vacuum in the market.

据《电池快讯》报道：全世界每年约需贮氢合金粉40000—50000吨，我国普通镍氢电池用贮氢合金每年需求量约8000吨，国内实际年产量不足5000吨，镍氢电池用贮氢合金目前国内需求量每年以30%以上的速度递增，市场需求缺口很大。

On the other hand, steam can be used to restrain the side reaction such as hydrogen transfer reaction so as to increase the yield of light olefins by diluting the concentration of the reactant. In addition, minor steam can react with the feed hydrocarbon resulting in the decrease of coke and the formation of active hydrogen without the increase of hydrogen gas and light saturates that is not desirable.

另一方面，水蒸气不仅仅具有降低烃分压的作用，抑制了氢转移反应等副反应，对于低碳烯烃的产率有好的影响，而且在反应过程中，少量参与了反应，与烃类发生了水煤气反应，生成了活泼氢，不仅降低了焦碳的产率，并且没有提高氢气、低碳烷烃等不希望得到的产物。

The main use of heavy hydrogen, excess hydrogen, etc. The thermonuclear fusion of light nuclei reaction principle, said the weapons made fusion weapons, also known as thermonuclear weapons or hydrogen bombs.

主要利用重氢、超重氢等轻原子核的热核聚变反应原理制成的武器称聚变武器，也称热核武器或氢弹。

The effect of different calcium chloride concentration, reaction time and neutralized acid on yield of tagatose was investigated by single factor tests. Results showed that the condition, such as calcium chloride (0.01～0.03 mol/L), reaction time(20～40 min), acetum, carbon dioxide, phosphate acid to synthesize tagatose was suitable.

通过单因素实验，确定了以D-半乳糖为原料进行化学法合成D-塔格糖的工艺条件为：CaCl2的添加量在0.01～0.03 mol/L，反应时间在20～40 min，并用醋酸、CO2、磷酸中和时D-塔格糖产率较高。

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