表面

Gas dispersion in liquid phase is generally non-uniform in gas-liquid surface aerators with large height-to-diameter ratio.

在高径比较大的表面曝气反应器中，由表面吸入的气体较难分散到反应器的底部，为增强反应器的气液传质性能，需要将反应器底部供气和表面曝气的配置优化。

Generally speaking for most cars, only the horizontal surfaces need to be clayed, as it is the horizontal surfaces that contaminants tend to land on and if not removed within a reasonable period of time will then bond tightly to the surface. For extremely neglected vehicles, you can always evaluate the vertical surfaces and if need be, clay them too.

一般而言，大部分的车子跑瓷土只需要跑水平表面的部分，因为脏污比较倾向於掉落在水平的表面，如果你没有在适当的时间内移除它，它将会紧紧的黏附在表面上，如果漆况是非常糟糕的话，你可以斟酌是否也对垂直的表面跑一次瓷土

Lastly, the comparison of those PVDF hollow fibers membrane before and after modification has been studied by separately applied them to practically oil water (with confected concentration of 60mg/L) separation test, the decrease of water flux was measured, according to the results, grafted hollow fiber membrane showed better antipollution capability, it indicated that this method is practicable and effective.

最后，将改性前后的中空纤维膜分别应用于油水(自配浓度为60mg/L)分离试验，测定膜通量的衰减，数据表明改性后的PVDF中空纤维膜表面的抗污染能力有很大程度的提高，这说明用表面化学接枝改性的方法可以改善疏水的PVDF膜表面，该方法是切实可行的。

The purpose of this study was to evaluate the shear bond strength between porcelain and electroformed copings after different surface treatments, with comparison of Ni-Cr alloys, to explore the bonding mechanism through observing the electroformed coping surface and interface of metal-ceramic by SEM and EDS analysis. It will provide the basis for clinical application. PartⅠEffects of different surface treatments on bond strength of porcelain fused to eleetroformed copings Materials and Methods: Forty-five cylindrical Ni-Cr alloys were made, and gold copings were deposited on them and divided into 5 groups randomly.

本实验拟测量金沉积基底几种不同表面处理后的金瓷剪切强度，并与Ni-Cr合金进行比较；通过对不同表面处理后的金沉积基底、金瓷界面进行扫描电镜观察和能谱分析，探讨不同表面处理对金沉积金瓷结合的影响，为金沉积烤瓷修复体的临床应用提供参考依据。

PartⅡEffects of different surface treatments on microstructure of porcelain fused to electroformed copings and metal-ceramic interface Materials and Methods: Five electroformed copings were made in the size of 5 mm×5 mm, different surface treatments were taken respectively, including no treatment, 50μm Al_2O_3 sand blasting, 110μm Al_2O_3 sand blasting, preoxidation after 110μm Al_2O_3 sand blasting, gold bonder applying after 50μm Al_2O_3 sand blasting. Another two metal-ceramic specimens by electroforming were made in the size of 20 mm×5 mm.

第二部分不同表面处理对金沉积基底及金瓷界面显微结构的影响材料和方法：制作5mm×5mm大小的金沉积片5个，分别经以下处理：表面未处理，表面50μm、110μm Al_2O_3喷砂，110μm Al_2O_3喷砂+预氧化，110μm Al_2O_3喷砂+金黏结剂；另外制作金沉积烤瓷试件2个，扫描电镜下观察金沉积基底层和金瓷界面形貌，能谱仪进行元素扫描分析。

Different surface treatments were taken on round gold surface, including no treatment, 50μm Al_2O_3 sand blasting, 110μm Al_2O_3 sand blasting, gold bonder applying after 50μm Al_2O_3 sand blasting, gold bonder applying after 110μm Al_2O_3 sand blasting, and the same nine Ni-Cr alloys were cast as contrast, the gold copings and Ni-Cr alloys were both received two layers of opaque and two layers of body porcelain. Shear tests were performed in a universal testing machine. After loading the sections were examined by SEM and EDS analysis.

第一部分金沉积基底不同表面处理对金瓷剪切强度的影响材料与方法：制作直径4.0 mm，高度为8.0 mm的圆柱形Ni-Cr合金试件45个，表面电镀形成金沉积帽状基底，随机平均分成5组，分别为表面未处理组、50μm、110μm Al_2O_3喷砂组、50μm Al_2O_3喷砂+金黏结剂组、110μm Al_2O_3喷砂+金黏结剂组；另铸造同样规格的Ni-Cr合金试件9个，作为对照。

Surface Treatment and Finishing Technology, Raw materials and Equipment: Cleaning, Lapping, Deburring, Polishing and Burnishing, Sand blasting, Shot blasting, Ball blast, Conversion coatings, Electroplating, Thermal spray, Anti-Rust, Anti-Corrosion, Brush-plating, Vapor deposition, Hot dipping, Surface strengthening, Surface modification, Pre-treatment, Electrophoretic coatings, Anode oxidation, Plastic plating, Vacuum plating, Special coating, Depainting and Degreasing equipmentand Raw materials.

产品表面处理和精饰技术、原材料和设备：清洗、研磨、去毛刺、磨光和抛光、喷砂、喷丸、抛丸、转化膜、电镀、热喷涂、防锈、防腐蚀、刷镀、气象沉积、热浸镀、表面强化、表面改性、预处理、电泳涂装、阳极氧化、塑胶电镀、真空电镀、特种涂层、脱漆脱脂设备和原材料

Solid desiccants Solid desiccants are characterized by an internal porous structure that contains very large internal surface areas with very small radii of curvature. The equilibrium partial pressure of water vapour above such concave surfaces is much less than that above plane surfaces and so solid desiccants exhibit a very great affinity for water.

坚实干燥剂坚实干燥剂为包含非常大内部表面以非常小半径曲度的一个内部多孔结构描绘。water.vapour 平衡部份压力在这样凹面表面之上是较少比那在平面表面之上和因此坚实干燥剂陈列非常巨大亲合力为水。

Under the same condition as methane partial oxidation, the reaction results are as follows: CH4 conversions is 88%, CO selectivity is 90%, H2 selectivity is 68%, CO2 selectivity is 12%.H2-TPD indicates that it is difficult for H2 to desorb from catalyst. It is estimated that the reaction between hydrogen and oxygen being absorbed is the primary approach to produce H2O, and it maybe lead to the lower H2 selectivity.

反应结果如下：CH4转化率88%；CO选择性90%；H2选择性68%，CO2选择性12%。H2-TPD实验表明，H2在催化剂表面难于脱附，表面氢与表面氧反应可能是生成H2O的主要途径，这也可能是H2选择性比较低的原因。

The analysis also indicates that a rearrangement of atoms has occurred in the Si (001) surface and, while a majority of surface atoms form bonds and dimerize, a minority still exist as non-bonding atoms.

本论文对Si（001）2×1表面再构、低能粒子轰击对再构表面的影响以及在Si（111）表面低能沉积类金刚石膜进行了分子动力学模拟研究。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。