查询词典 hydrogen fluoride

In 500—1000 ℃, electronic hole conduction is dominant in dry and wet oxygen, air or nitrogen. Protonic conduction is dominant in wet hydrogen and it is about two orders of magnitude higher than that in hydrogen-free atmospheres.

在500~1000℃下，在干燥和潮湿的氧气、空气和氮气气氛中，样品以电子空穴导电为主；在潮湿的氢气气氛中，以质子导电为主，其电导率比不含氢气气氛（O2，air，N2）中的电导率约高两个数量级。

There are two parts in this thesis. Part I focuses on the transient effect in InGaP/GaAs hetero-junction bipolar transistors. Part II focuses on the P memory effect and buffer-layer-quality determination using C-V measurement in AlGaAs/GaAs pseudomorphic high-electron-mobility transistors. The characterization of hydrogen passivation for InGaP HBTs grown on semi-insulating GaAs substrates is studied. The transient effect caused by hydrogen passivation results the current gain ?

本论文分两部分，第一部份讨论在磷化铟镓的异质接面双载子电晶体中，由於氢的包覆效应产生的特性之研究，由於氢在此种元件中所造成的载子包覆现象是引起电流增益增加的暂态现象的主要原因，本论文提出一个计算氢包覆比例的模型，并与SIMS量测的结果相比对，经过几次热回火处理，此种暂态效应可以被消除。

We find that methanol will effectually pyrolyze and generate large amounts of hydrogen when it is heated above 400℃. The ratio of pyrogenation and amount of hydrogen generated increase rapidly with the temperature rise.

实验发现，甲醇在被加热至400℃后会开始热分解产生氢气，并且随着温度的升高，热分解率及产氢量快速增大。

Methanol can pyrolyze and generate hydrogen when it is heated by the exhaust of diesel engine(temperature range between 400℃and 600℃). Then let the hydrogen generated from methanol go into cylinder with the air directly. By this means, we hopefully increase the rate of economizing oil of emulsified fuel in diesel engine.

利用柴油机排烟(温度一般在400～600℃)余热加热甲醇热分解制氢，并在线通入到柴油机进气道入口，有望实现柴油机燃用乳化油时节油率的提高。

The preferred organometallic compounds of the present invention are of the formula (R1)m M(PR23)x, where M is a metal selected from the group consisting of manganese, technetium, rhenium, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium iridium and platinum wherein m is 0, 1, 2, 3 or 4; x is 2, 3, 4 or 5 and m+x are 2, 3, 4, 5, 6, 7 or 8, m and x selected according to each metals appropriate valence; each R1 is independently selected from the group consisting of hydrogen, deuterium, N2, H2, D2 and a variety of substituted alkyl groups; each R2 is independently selected from the group consisting of lower alkyl, aryl, arylalkyl, and alkyl-Z, aryl-Z and arylalkyl-Z where Z is selected from the group consisting of oxy, silyl, siloxy, oxysilyl, siloxy, oxysiloxy, silyalkyl, oxysilylalkyl, siloxyalkyl, oxysiloxyalkyl, silylalkoxy, silylalkoxy, siloxyalkoxy and oxysiloxyalkoxy; and wherein when M is cobalt and one group R1 is selected to be N2, then m is 2 and the second group R1 is hydrogen or deuterium.

有机化合物的首选本发明的配方是米(R1代)米×(pr23)、那里是一米的金属挑选出来，第一组由锰、锝、铼、铁、钴、镍、钌、铑、钯、锇、铱铂其中M是0、1、2、3或4； X是2，3， 4或5米×+有2，3，4，5，6，7或8 米和X挑选合适的价按每个金属； R1的是每一组由独立选自氢、氘、氮、氢气、 D2和各种烷基取代群体； R2中的每个组由独立选自烷基低、芳、芳基烷基、烷基的Z、芳基、芳基烷基的Z-那里的ZZ是选自组风、含硅、氧、oxysilyl、硅、oxysiloxy，silyalkyl， oxysilylalkyl，siloxyalkyl，oxysiloxyalkyl，silylalkoxy，silylalkoxy，siloxyalkoxy和oxysiloxyalkoxy；其中，M是当钴一派R1的选择是氮气、然后是2米，第二组R1的氘是氢或者。

The effects of various factors, such as sulfurization time, temperature, sulfurization pressure, the concentration of sulfureted hydrogen, the concentration of hydrogen, granularity of catalyst and so on, are studied.

利用程序升温硫化技术，对负载在不同载体上的Co和Mo系催化剂的硫化过程进行了研究，分析了活性组分Co、Mo在催化剂硫化过程中的形态变化以及催化剂的硫化机理，同时还探讨了载体在催化剂硫化过程中的作用。

It indicated that the PES could be uniformly dispersed in melt ε-caprolactam with small domains depending on the strong interaction between the components, The hydrogen bonding was formed between the hydrogen atom on acid amide groups and the sulphone on PES resulting in the process of the dissolution of PES in melt ε-caprolactam being greatly accelerated.

结果表明，依靠其组分之间强烈的作用力，使PES能以较小的相畴均匀的分散在尼龙6基体中；酰胺基团上的氢原子能与聚醚砜中的砜基之间产生氢键作用，从而促进了聚醚砜在己内酰胺熔体中的溶解。

Test results showed that tetralin was an appropriate hydrogen donor. By adding tetralin, the activation energy of the hydrogen transfer reactions were...

结果表明，四氢萘为合适的供氢组分，四氢萘通过降低反应活化能来强化氢转移反应；提高反应温度有利于提高四氢萘的供氢能力，但温度高于450℃后，四氢萘裂化倾向加大；催化剂的酸性对供氢组分的选择性供氢有影响，合适的酸量和酸密度有助于促进供氢组分参加的氢转移反应。

Catalytic cracking ; gasoline stock ; hydrogen donor solvent ; hydrogen transfer ; tetralin

催化裂化；汽油料；供氢溶剂；氢转移；四氢化萘

Several novel structures have been determined: Unique ninenuclear complexesincorporating 3d, 4f metals with a sodium ion center, the sodium ion may be serve as atemplate in the formation of these novel complexes; Novel tetranuclear 〓complexes with channels formed by intermolecular weak interactions; First 〓type tetranuclear complex; Peculiar "dimer of dimers" complexes derived frombinuclear complex; Unusual one-dimensional wave chain formed by weakcoordination bonds and hydrogen bonds and two dimensional coordination polymerconstructed through coordination bonds and hydrogen bonds.

1获得了多个文献首报和罕见的特殊结构的配合物：两个同时含有碱金属-过渡-稀土金属的独特的九核配合物；两个具有孔道的稀土-过渡金属异四核配合物；草酰胺类〓四核配合物；两个由双核配合物通过叠氮和单个氯原子连成的四核配合物，尤其是以单个氯桥相连的化合物非常少见；一个由弱配键和氢键连成的具有一维波浪形结构的配合物；一个通过配位键和氢键连成的二维配位聚合物。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。