查询词典 hydrogen

The hydrogen bonding of 1:1 complexes formed between acetamide and three kinds of isomers of picolines have been completely investigated using B3LYP method at various basis set levels from 6-31G to 6-31+G and 6-31++G. The results show that the interaction energies of hydrogen bond complexes between acetamide and picoline isomers have great effects on the values of h_.

2采用密度泛函理论等方法研究了乙酰胺分子分别与甲基吡啶三种异构体分子以1：1的比例形成的氢键络合物，从B3LYP/6-31G到6-31++G基组水平进行了优化，利用结合能数据讨论了焓对作用系数的差异。

Meantime, through great deal of experiments, spark advance angles, ignition dwell angles, start injection width and electrical throttle threshold were optimally controlled. At last, quick response time of hydrogen-fueled engine was realized, speed stability after successful start was controlled. At the same time, backfire, preignition and fire a gun in the start state of hydrogen fueled engine were avoided.

同时通过大量试验调试，对点火提前角、点火闭合时间、喷气正时、电子节气门开度、起动喷气脉宽进行优化控制，使发动机起动响应时间快，起动后转速波动平稳；同时避免了氢燃料发动机起动时易出现的回火、早燃、放炮等异常燃烧现象。

Soybean proteide fibre is not able to bear a strong base and high temperature, can only bleach under the neuter is low-temperature condition when using hydrogen peroxide solution to bleach , need at the same time adding the hydrogen peroxide solution activating agent.

大豆蛋白质纤维不耐强碱和高温，用双氧水漂白时只能在中性低温条件下漂白，同时需加入双氧水活化剂。

The best radiation protection material is hydrogen, or water, which is rich in hydrogen, Drake said.

最好的防辐射材料是氢，或富含氢的水。

The substance which gives up hydrogen is said to be oxidized and the one which accepts the hydrogen is sais to be reduced.

释出氢的物质是氧化物，吸收氢的物质减少了。如果化学学的认真点就不是这样了。一个物质失去氢叫做被氧化，一个物质得到氢叫做被还原。

According to the degenerate perturbation theory and the secular equation of n=1,2,3 energy level,Stark s effect of n=4 energy level for hydrogen atom is studied and calculated and the stark s effect for hydrogen atom atth energy level have also been deduced.

根据简并情况下的微扰理论和n=1，2，3对应能级的久期方程，推出n=4状态下氢原子的斯塔克效应中的久期方程，并算出该状态下氢原子在电场中的能级分裂情况。

Accordingly, the accident of sulfide stress corrosion cracking should be taken into account.The SSCC sensitivity and cracking time of 16Mn steel used to make the cold-high pressure segregator and common 16Mn steel in solutions with various H2S contents and pH values, simulated solution and operating solution were investigated by constant strain bend and slow strain rate test.Hydrogen diffusion coefficients of 16Mn steel, 16Mn steel and their welded seams were also tested by the electrolyte hydrogen charged method.Safety evaluation of the cold-high pressure segregator was given with above results.

针对制造过程中由于开孔失误而进行补焊的冷高压分离器在高压、高浓度的H2S环境的使用安全问题，采用了电化学充氢、恒应变和慢拉伸的实验方法，研究了制造冷高压分离器的主体材料16Mn钢和普通的16Mn钢及其焊缝的氢扩散系数，在不同H2S浓度、pH值，模拟冷高压分离器操作环境溶液和实际溶液中的腐蚀规律和硫化氢应力腐蚀开裂敏感性，结合实际腐蚀环境的检测和分析结果，对补焊后的冷高压分离器的使用安全给出了综合评估。

The solubility～temperture curve of rubidium hydrogen selenate in aqueous was measured,and the bulk crystal of rubidium hydrogen selenate was grown by solution temperature reduction method after some unfavorable factors such as floating crystals and climbing crystals et al.

本文测定了硒酸氢铷在水中的溶解度～温度曲线，并采用溶液降温法，克服了RHSe晶体生长时易漂晶、爬晶等不利因素，生长出大尺寸硒酸氢铷单晶。

With the increase of pressure, the hydrogen bond strength between water molecules increases, while self-diffusion coefficient decreases. With the increase of temperature, the hydrogen bond strength between water molecules decreases, while self-diffusion coefficient increases.

模拟结果表明，随着压强的增大，水分子间的氢键作用增强，扩散系数减小；随着温度的升高，水分子间的氢键作用减弱，有序程度下降，扩散系数增大。

The method of on-line hydrogen measurement detects the partial pressure to calculate the hydrogen content of the melted steel by Sievert'law.

钢中大多数重要的伴生元素都可以用自钢液中取出的试样在实验室里几分钟

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