查询词典 elemental

Eleven molecular tweezer artificial receptors based on deoxycholic acid have been synthesized by using solid K2CO3 as supporter through the reaction of methyl deoxycholate with aroyl chloride in solvent-free conditions under microwave irradiation, five of which are new compounds. The structures of all the molecular tweezers were characterized by 1H NMR, IR, MS spectra and elemental analysis.

在微波辐射无溶剂条件下，以固体K2CO3为载体，脱氧胆酸甲酯与芳酰氯反应合成了11个脱氧胆酸分子钳人工受体，其中5个为新化合物，所有化合物的结构均经1H NMR， IR， MS及元素分析所确证。

The author performed a multi-elemental analysis on the cycle of competition state formation, asymmetry between competition state and competition performance, adjustability of competition state at competition field, and competition state evaluation indexes, and pointed out that competition state is a process of dynamic development, having characteristics of uncertainness.

对竞技状态形成的周期性、与运动成绩的非对称性、临场可调性以及评价指标的多元性进行分析，指出竞技状态是一个动态发展的过程，具有不确定性的特征。

The hawk is aerial brother of the wave which he sails over and surveys, those his perfect air-inflated wings answering to the elemental unfledged pinions of the sea.

鹰是波浪的空中兄弟，它在波浪之上飞行视察，在空中扑击的完美的鹰翅，如在酬答海洋那元素的没有羽毛的翅膀。

To efficiently handle the nonlinearity,unscented Kalman filter is introduced into the design of elemental filter that is hypothesis dependent.

为有效处理非线性，不敏卡尔曼滤波器被用于设计依赖假设的单元滤波器。为满足应用要求，给出了该算法的数值鲁棒实现方法。

The obtained unsymmetry substituted phthalocyanines were characterized by Mass spectrum, ultraviolet-visible spectrum, Infrared Spectroscopy and elemental analysis.

不对称酞菁经过元素分析、红外、紫外可见光谱和质谱的表征证明其结构，从而证实产物就是目标化合物。

In chapter 1, the thesis studies the basic conception, the elemental characters and functions of water, and makes a brief analysis of the origin and development of waterscape.

第一章研究了水体的基本概念、基本特征和功能作用，分析了水体景观的渊源和发展。

ABSTRACT Amorphization of Cu-Zr system by mechanical alloying of elemental Cu and Zr powder mixtures (30-65at% Cu) and mechanical grinding of the alloys with Cu concentration ranging from 59 to 75at% have been extensively investigated. The structural changes, crystallization behavior as well as atomic short range ordering were followed by differential scanning calorimetry , X-ray diffractometry and nuclear magnetic resonance spectroscopy .

本文采用多种技术系统地研究了球磨Cu和Zr混合粉末制备的Cu〓Zr〓（x=30，33，40，50，55，59，65）非晶合金的形成过程和球磨金属间化合物得到的Cu〓Zr〓（x=59，65，70，75）非晶合金的形成过程，比较了它们形成过程的异同，同时研究了球磨形成的非晶合金的晶化行为以及原子短程有序结构，并与急冷非晶合金作了详细的比较。

The winter-time PM2.5 pollution was serious with an average concentration of 223μg/m^3. Organic matter, sulfate and elemental carbon were the most abundant species constituting about 23.4%, 13.1% and 12.8% of the total PM2.5 mass, respectively.

结果表明，天津冬季PM2.5污染严重，平均质量浓度为223μg/立方公尺，其中有机物、SO4(上标 2-)和元素碳是含量较高的3种组分，分别占PM2.5总质量的23.4%，13.1%，12.8%。

Methods Elemental analysis, IR spectrum and X-ray diffraction analysis were used to describe the composition.

采用化学分析、红外光谱分析和X-射线粉末衍射分析等手段。

The nods and element meshes were signed out according to the geometry of every section. The geometric data was input computer and the element mesh body of cats＇ head was established in vizi CAD system. The Maximum stress,Minimum stress and yon Mises stress were calculated by Super SAP (93ed) finite elemental software when the force was loaded on right or left side of model in zero section.

方法猫头颅CT断层确定各层面节点并数字化，在有限元专用vizi CAD系统建立猫头颅三维有限元网格体模型，应用Super SAP有限元软件(93版)分析猫头半约束非撞击致伤时颅脑最大主应力、最小主应力、von Mises应力值及其在各层面的分布。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。