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Firstly,the general relation between radiated noise and surface vibration is established and the radiation ratio is discwsed.

首先阐明了发动机表面辐射嗓声和表面振动之何的关系并对辐射比进行了较为详细的讨论；而后通过实验研究了发动机各部件的表面振动特性。

When the fractal dimensions are different, the oxygen contents of the surfaces after the dropwise condensations are different. And the fractal dimension of the magnesium surface becomes larger.

结果表明冷凝试件的表面形貌特征对初始滴状冷凝有较大影响，其分形维数不同，冷凝后镁表面氧含量也不同，冷凝后镁表面形貌的分形维数变大。

The research results show that a PDE surface can avoid the construction of continuous functions and a compound PDE surface reconstruction can conveniently realize the crosssectional contour surface continuity of the first order or more parameters.

实验结果表明，PDE重构断层间轮廓线表面避免了连接函数的构造，而且基于组合PDE曲面的断层间表面重构方法能方便地实现轮廓线间表面的一阶或一阶以上的参数连续。

Xenon ion and energetic electron emitted from xenon ion engine influence the surface charging/discharging effect by taking part in the process of GEO satellite surface charging/discharging caused by space plasma,second electrons and photoelectrons.

用于GEO卫星上的氙离子发动机工作时喷射出具有一定能量和密度的氙离子及电子，参与了通常由空间等离子体、表面材料二次电子、光生电子等对GEO卫星的表面充/放电过程，从而对卫星表面充/放电效应产生影响。

The luminescence mechanism was studied and we considered that photo-excitation occurs at inside of Si nanoparticles, and then the photo-generated carriers relax to the surface and radiatively recombine on the surface states.

我们对多孔硅的发光机理进行了分析研究，认为光激发发生在纳米硅颗粒中，光生载流子弛豫到颗粒表面，在表面氧化层中表面态上辐射复合而发光。

In this paper, the principle of preparation of live vaccine with Saccharomyces cerevisiae by using the surface-display technique, the advantage of displaying protein on surface of the yeast cell, and surface-display of haemolysin from Vibrio harveyi on the yeast cells and their potential applications as live vaccine in marine fish are reviewed.

本文对利用酒精酵母细胞表面展示技术制备活疫苗的基本原理，在酵母细胞表面展示蛋白质的优点，以及哈维氏弧菌溶血素蛋白在酵母菌细胞表面上展示及其作为活疫苗的潜在应用作了综述。

It has promoted the growth of new surfactants by the development of new technologies and changes in consumption concepts.

文章就表面活性剂市场的现状及发展趋势进行了论述，并且介绍了一些国际化工企业或表面活性剂生产商在表面活性剂研发方面的动态及其新产品开发，以及应对 REACH 法规的措施。

Chromic acid oxidation and sizing agent surface treatments were used to modify ultra high molecular weight polyethylene fibers together.

对超高分子量聚乙烯纤维进行了铬酸液相氧化和上胶剂表面涂覆的复合表面处理，并对UHMWPE纤维表面处理前后与几种不同结构的环氧树脂基体制备的复合材料进行界面性能研究。

In this work,activated carbon fiberswere respectively modified using different concentration ammonia aqueous solution,and the textural pvoperties and the surface oxygen content as well as the surface acidities of the modified ACFs studied were determined by nitrogen adsorption,elemental analysis and Boehm titration methods.

主要研究采用氨水对活性炭纤维ACF表面进行改性，制备了3种不同的改性ACF，测定ACF孔结构和表面酸碱基团，并测定了苯乙烯在改性ACF床层的吸附透过曲线，讨论了改性ACF的孔结构和表面酸碱基团对其吸附性能的影响。

The depressing ability of the macromolecule organic depressants can be improved by the increase of their D.S.. The high D.S. CPVA and CPEG show strong depressing ability to calcite, while CPEG indicates strong depressing ability to diaspore, and HPAM to pyrite.The depressing mechanism of organic depressants was confirmed by the measurements of zeta potential, contact angles, adsorption capacity and IR spectrum.

利用动电位、接触角、吸附量和红外光谱等测试方法和手段，探讨了抑制剂的作用机理：苯氧乙酸类小分子抑制剂与方解石之间可发生较强的化学作用，可以选择性地吸附在方解石表面，使捕收剂发生解吸或阻止捕收剂在矿物表面的吸附而使矿物受到抑制；大分子抑制剂则主要是依靠亲固基吸附在矿物表面，再利用其长链的强亲水性而使矿物受到抑制。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。