查询词典 hydrogen

The results indicated that a dependable kinetic model could be obtained by modifying the Temkin equation by considering the H2 and NH3 adsorption factors. Activation energy for the ammonia synthesis reaction was obtained as 90.2 kJmol^(-1) after linear fitting the kinetic and thermodynamic parameters k, K(subscript H2) and K(subscript NH3) with the Arrhenius and Van't Hoff equation, which was much lower than that over iron-based catalyst, which indicated that the activation energy barrier of N2 dissociative adsorption on Ru was far lower than that on either the conventional magnetite-based catalyst or wustite-based catalyst; the hydrogen adsorption heat was 76.2 kJ mol^(-1), indicating that the adsorption of hydrogen on the Ba-Ru-K/AC catalyst was so strong that it inhibitied the dissociative adsorption of nitrogen.

结果表明，在Temkin方程中加入H2和NH3的吸附项能够获得可靠的动力学模型，用Arrhenius和Van't Hoff方程对动力学和热力学参数k、K(下标 H2)和K(下标 NH3)进行线性拟合，得到氨合成反应的活化能为90.2 kJmol^(-1)，远低于铁基催化剂，说明Ru上N2的解离吸附活化能垒远低于传统磁铁矿基催化剂和维氏体基催化剂。H2的吸附热为76.2 kJmol^(-1)，证明Ba-Ru-K/AC催化剂上H2的吸附较强烈，对N2的吸附有强烈的抑制作用。

The physical character of the super-critical hydrogen in the regenerative cooling channel is studied : started with the physical character of the super-critical hydrogen , using the method of least square , figuring out the state equation which is applicable to the state from liquid to the super-critical in the super-critical pressure , the constrained convection and the heat transfer in the super-critical channel are simulated using the equation , the results of the simulation are identical with the experiment in the same condition .

对再生冷却通道内的超临界氢的物性进行了研究：从超临界氢物性的实验结果入手，用最小二乘法拟合出适用于超临界压力下氢由液态过渡到超临界态的状态方程，并利用该方程对超临界氢管内强迫对流换热进行了数值仿真，仿真结果与相同条件下实验结果相一致。

Deuterium, a natural isotope of heavy hydrogen, having one proton and on neutron, whereas normal hydrogen has one proton and zero neutrons, could be used routinely.

重水中的天然同位素氘具有一个质子一个中子，它不同于正常的氢只有一个质子没有中子，可以常规应用。

What's more,there are abundant energy on the Mars:such as the wind energy is much more than that on the earth; the geothermal energy on the Mars;the methane fuel produced by carbon dioxide and hydrogen;the nuclear power generation with heavy hydrogen and so on.

火星上有丰富的能源。如风能比地球上要丰富得多；火星上有地热能；还可利用二氧化碳和氢制造甲烷燃料；也可用重氢进行核发电等等。

The heavy hydrocarbons of coal-derived gas associated with fresh lacustrine and marsh have relatively hydrogen light isotope but those related with marine environments have relatively heavy hydrogen isotope.

淡水湖沼相烃源岩生成的煤成气相对富集氢同位素氕，而海相烃源岩生成的煤成气则相对富集氢同位素氘。

It took Cockcroft and Walton five years to build a machine that worked. Finally, in April 1932, they had a machine that produced a steady stream of hydrogen nuclei with an energy of about half a million volts. They were carefully measuring the quality of the stream, in no hurry to begin doing nuclear experiments. On the morning of April 13, Rutherford came into their room, saw what they were doing, and lost his temper. He told them to stop wasting their time and do some science. The next day, Cockcroft was occupied with other business. Walton was alone in the laboratory, ready to do the first experiment, using his hydrogen nuclei to bombard a target made of the light metal lithium. The result was spectacular. The lithium nuclei were split in two and fell apart into pairs of helium nuclei.

用了五年时间，考克饶夫和华尔顿建造出了第一台能运行的加速器，最终，在1932年，他们制造出了能够提供稳定氢粒子流的加速器，粒子能量大约为50万伏特，他们并没有急着做核试验，而是精心测量了粒子流的性质，4月13日清晨，卢瑟福来到他们的房间，看到他们还在测量，大发雷霆，告诉他们停止浪费时间，开始科学研究，第二天，考克饶夫就被安排了其他事情，只剩华尔顿一个人在实验室里，准备做第一次实验，用他的氢粒子流轰击用轻质金属锂作的标靶，结果极为壮观，锂原子被分裂成两半形成一对氦原子，氦原子释放出的能量比氢原子注入的多达三十倍！

Rutherford and Teller were both immigrants who became fiercely patriotic in defense of their adopted countries. Both often behaved like overgrown children, losing their tempers over trivialities and then regaining their equilibrium with a friendly smile. Both were father figures to their students, taking care of students' personal problems as well as their professional education. Both were more interested in the strategy of science than in the tactics. Rutherford made the decision to explore nuclei with an accelerator, and then left the details of the accelerator to Cockcroft and Walton. Teller made the decision to build a hydrogen bomb or a safe reactor and then left the details to others. Both had a lifelong dedication to science, but spent more time helping younger people than doing research themselves. Teller published his version of the hydrogen bomb story under the title The Work of Many People. The names of Cockcroft and Walton appear on the letter to Nature announcing their discovery but Rutherford's does not. My name appears on the patent for the safe reactor but Teller's does not.

卢瑟福和泰勒都是移民，都对维护他们移民去的国家表示出狂热的爱国主义情绪；两者的行为都很像身体过度发育的孩子，对琐事大发雷霆，随后又若无其事，友好亲切；两者都对学生像父亲一样，既关心他们的个人问题，也关心他们的学业；两者都多科学研究的策略而不是技巧更感兴趣，卢瑟福决定用加速器研究原子，把有关加速器的细节问题留给卡斯喀特和华尔顿，泰勒决定造氢弹和安全反应堆，然后把细节问题留给其他人；两人都把一生献给科学研究，但花费在帮助年轻人的时间比自己做研究的时间要多得多；泰勒以《齐心协力》为标题讲述了他眼中的氢弹故事；卡斯喀特和华尔顿的名字出现在写给《自然》杂志宣布他们发现的信中，但信中没有卢瑟福的名字，我的名字出现在安全反应堆专利中，但也没有泰勒的名字。

She was lost in 1921 apparently when a structural failure jammed her controls and sent her crashing into power lines near her base near Hampton Roads Va. Filled with hydrogen; she exploded in flames, killing thirty-four crew. The disaster was a major reason for the movement from hydrogen to helium in American airships..

一旦蒙皮里充满压力气体（H2）的时候，升降气囊就会使他像软式飞艇那样浮起来。1921年，他在弗吉尼亚州的汉普顿路附近坠毁，原因很清楚，一处结构损坏，卡住了他的控制器，使他一头撞上了基地附近的电线，造成泄露的氢气爆炸，致使34名机组人员死亡，这场灾难是导致美国飞艇转用氦气的主要原因。

If you think about AB 32, to roll back our greenhouse gases to the 1990 level, or if it is the Million Solar Roof Initiative, the Low-Carbon Fuel Standard, the Renewable Energy Standard, the Green Building Initiative, the Hydrogen Highway, and the list goes on and on of the kind of things that we have done.

这里我们会想到AB32政策会把二氧化碳的排放降低到1990年的水平；或者"百万太阳能屋顶"鼓励政策，"低炭燃料"标准，可持续能源标准，"绿色建筑"倡议，"氢燃料高速公路"等等等等。

Its method is: Will after the face is abluent, dip in with clean handkerchief or towel the apply of hydrogen peroxide solution of on 30% at facial, every time 3 to 5 minutes, daily 1 come 2 times, use consecutively 7 to 10 days.

其方法是：将脸洗净后，用干净的手帕或毛巾蘸上30%的双氧水敷于面部，每次3至5分钟，每日1至2次，连用7至10天。

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