查询词典 hydrogen

Thin film of tellurium was prepared by chemical vapour deposition on the polyethylene foils using room-temperature decomposition of electrochemically generated hydrogen telluride.

摘 要：用化学气相沉积法制备碲薄膜，其步骤为：通过电化学方法制得碲化氢，碲化氢在室温下分解后在聚乙烯塑料箔上沉积得到碲薄膜。

"The acid reacts with most metals, to produce hydrogen and the metal's chloride, and with oxides, hydroxides , and many salts."

盐酸与大多数金属反应产生氢和金属的氯化物，还能与氧化物、氢氧化物及许多盐起反应。

Methods Glucose oxidase acted on saliva glucose,the generated hydrogen peroxide was measured by use of peroxidase with 2,4,6-tribromo-3 hydroxybenzoic acid and 4-aminoantipyrene to give a pink product that absorbed maximally at 510nm.

方法用2，4，6-三溴-3-羟基苯甲酸取代葡萄糖氧化酶测定法的苯酚，用于唾液葡萄糖的测定。并观察正常人与糖尿病患者血糖浓度和唾液葡萄糖含量之间的关系。结果186例健康人晨空腹唾液葡萄糖浓度为8.14±1.78mg/L。

The efficiency and safety of hydrogen recombiners and igniters were investigated based on flame acceleration criterion and the criterion for the deflagration to detonation transition.

以火焰加速准则和燃爆转变准则为基础，利用GA SFLOW程序对影响氢气点火器与复合器的消氢效率和使用安全性的因素：水蒸气浓度和氢气释放速率，进行了研究。

In the fifth part, asymmetric synthesis of β,γ-trans-alkenyl α-amino esters was achieved by chiral phosphoric acid catalyzed transfer hydrogenation of β,γ-alkynyl α-imino esters. Utilizing Hantzsch ester as the hydrogen donor, both the alkyne and imine moieties of β,γ-alkynyl α-imino esters were reduced to yield β,γ-trans-alkenyl α-amino esters with up to 96% ee.

第五部分工作中，使用手性磷酸作为催化剂，Hantzsch酯作为氢源，β，γ-炔烃取代的α-酮酸酯亚胺中的炔键和亚胺官能团均被还原，以中等的收率和优秀的对映选择性（up to 96% ee）得到β，γ-反式烯烃取代的α-氨基酸衍生物。

The effect of MnS inclusions on hydrogen diffusion in steel was investigated by experiment and finite element method.

通过实验和有限元计算研究了MnS夹杂对钢中氢扩散行为的影响。

If this white body be exposed to the air, the oxygen of the air undoes what the hydrogen did, and oxidises that Indigo White to insoluble Indigo Blue.

靛白如果暴露在空气中，氧气的氧化作用使靛白变成蓝色难溶的靛蓝。

Peptide bonds composed of glycine form interchain hydrogen bonds with two other collagen polypeptide chains, and this results in a stable triple helix.

例如，某些蛋白质中包含了有α-螺旋结构存在的区域和另外不能形成这种结构的区域。

The entanglements of the methylene groups adjacent to the CO and NH groups, are less pronounced owning to the formation of interchain hydrogen bonds.

与CO和NH基团相连的亚甲基基团的缠绵结不很明显，主要是因为尼龙6链间氢键的存在。

It is well known that the ordered triple helical structure of collagen is stabilized by both interchain hydrogen bonds and "structural" water molecules. But from the point of application, the use of plain native collagen as materials is often precluded by inadequate physical-chemical and mechanical properties.

胶原蛋白的保湿性能特别优异，用胶原蛋白纺丝得到的胶原蛋白纤维所制成的纺织面料和衣服将保留一部分天然胶原蛋白的性能，且胶原蛋白的结构与人体皮肤具有相似性，因而与人体皮肤具有较好的亲和性，穿着更加舒适。

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。