查询词典 hydrogen fluoride

Studies on the Interaction of Femtosecond Intense Laser Pulses with Rare Gas Clusters and Hydrogen Clusters Abstract The interaction of ...

飞秒强激光脉冲与惰性气体团簇和氢团簇的相互作用研究飞秒强激光与物质相互作用研究是当前科学研究的热点前沿之一。

Compared with the low absorption efficiencies of a gas of atoms and molecules (less than 10%), it is demonstrated experimentally that a gas of clusters has much higher absorption efficiency. The absorption efficiencies to the laser energy are as high as 90% and 50% for rare gas clusters and hydrogen clusters, respectively.

实验发现，相对于原子或者分子气体喷流对激光的低吸收效率（小于10％），惰性气体团簇喷流和氢分子团簇喷流对飞秒强激光脉冲有非常强的吸收，吸收效率分别达90％和50％以上。

Shell′s coal gasification technology has also been licensed in China to manufacture fertilisers, hydrogen and methanol.

此前，壳牌的煤气化技术已经转让给多家中国企业，用于化肥、氢以及甲醇的生产。

The results indicated: COD removal efficiency could remain at 70%, the product gas was mainly composed of methane, carbon dioxide and hydrogen, tile maximal methane producing activity sequentially were 211 mLCH4gVSS^(-1)d^(-1), 314 mLCH4gVSS^(-1)d^(-1), 319 mLCH4gVSS^(-1)d^(-1); The main components of effluent were acetic acid and propanoic acid; The dominant microorganisms sequentially were Bacillus, Coccus, Methanothrix and Methanosaet.

实验结果表明：COD的去除率可维持在70%左右，产气主要含有甲烷、二氧化碳和氢气，每格最大产甲烷活性依次为211 mLCH4gVSS^(-1)d^(-1)，314mLCH4gVSS^(-1)d^(-1)，319mLCH4gVSS^(-1)d^(-1)；出水产物为乙酸和丙酸；每格优势菌种依次为杆菌、球菌、甲烷丝状菌和甲烷八叠球菌。

In these components, 2-methyl-1-propanol, ethyl acetate, 3-methyl-1- propanol, 2,3-butanediol, phenylethyl alcohol, butanedioic acid diethyl ester, ethyl hydrogen succinate, 2-hydroxy-ethyl propanoic acid and 4-hydroxy-benzeneethanol were main aroma components, these volatile componds provided the typical sensory style of wine.

其中，2-甲基-1-丙醇、乙酸乙酯、3-甲基-1-丙醇、2，3-丁二醇、2-羟基丙酸乙酯、苯乙醇、丁二酸二乙酯、乙基-氢化琥珀酸和4-羟基苯甲醇等成分构成了葡萄酒的主体香气，这些主体香气与其他风味成分一起构成葡萄酒的典型风味特征。

For the purpose to study its critical issues for fusion application, many kinds of V-W-Cr-Ti-Al alloys were developed, and were used for studies of recovery and recrystallization, aging behavior and precipitation hardening, high-temperature mechanical performance, effects of H on mechanical properties and hydrogen enbrittlement, H release behavior and oxidation behavior at elevated temperature. Mechanizms for the behaviors were analyzed and the relationship between chemical composition, microstructure and properties was established.

为研究其聚变应用关键问题，本项目研制了多种V-W-Cr-Ti-Al合金，利用它们完成了合金的回复和再结晶、时效行为和析出强化、高温力学性能、氢对合金力学性能的影响及氢脆、氢释放行为、高温氧化行为等研究，分析了合金的行为机理，建立起了合金性能与化学成份、微观组织结构的关系，是以后研制更高性能合金的基础。

It has been known for many years that an electron and its antiparticle, the positron, may together form a metastable hydrogen-like atom, known as positronium or Ps ref.

多年前科学家就已经知道，一个电子和它的反粒子，即正电子，能够结合形成一个亚稳态的、像氢原子一样的原子，被称为positronium。

It has been known for many years that an electron and its antiparticle, the positron, may together form a metastable hydrogen-like atom, known as positronium or Ps ref.

多年前科学家就已经知道，1个电子和它的反粒子，即正电子，能够结合形成1个亚稳态的、像氢原子1样的原子，被称为positronium。

It has been known for many years that an electron and its antiparticle, the positron, may together form a metastable hydrogen-like atom, known as positronium or Ps ref.

核心提示：多年前科学家就已经知道，1个电子和它的反粒子，即正电子，能够结合形成1个亚稳态的、像氢原子1样的原子，被称为positronium。

The relative small o-Ps lifetime (1.48—1.63ns) can beexplained by the rigidity and high packing density of molecule chain, due to theintrachain and interchain hydrogen bond interaction respectively, whereas in 〓-containing chitosan, the grafted 〓 that play a significant chemical inhibition andquenching role on positronium formation and annihilation is first observed.

CS的相对小的尺寸和较低的自由体积浓度归因于氢键作用而致分子链较为致密的堆砌，在〓-CS中首次发现了〓基团对正电子素湮没的抑制和猝灭作用，此时〓和〓不再直接对应于自由体积尺寸和浓度。

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