表面

Aluminium trihydrate was modified by stearic acid by means of wet craft in this experiment.The activation index and sedimentation rate were determined.

实验采用湿法表面改性工艺，以硬脂酸为改性剂对氢氧化铝阻燃剂进行表面改性处理，通过活化指数和沉降速度等表面物化性能的测定，确定了最佳的改性工艺条件。

Effect of tungstic electrode argon arc hardening parameters on microstructure and mechanical properties of boron cast iron surface was investigated.

采用氩弧重熔技术在硼铸铁表面进行表面硬化改性处理，研究了钨极氩弧硬化工艺参数对硼铸铁表面组织和性能的影响。

The results reveal that the surface microimages of Mg-implanted samples compared to unimplanted no distinctness influence.

分析结果显示，离子注入对材料表面形貌无显著影响，Mg离子注入后在纯Ti表面有MgO和Mg_2TiO_5生成，ZrO_2表面则有MgAl_2O_4生成。

Wear experimental results showed that the wear rate of Ta+C-implanted steelwas increased and the friction coefficient dropped significantly compared with that of unimplanted H13 steel.

但当模具温度超过400 ℃时，工件铝材表面就会形成坚硬的Al2O3，而模具氮化表面将形成疏松而容易发生点腐蚀的氧化铁，从而导致模具在预热阶段就开始腐蚀，加上Al2O3引起的严重磨损，模具承载表面会过早和突然破损。

The fretting wear experiments were made on nitrogen imp-larted samples and unimplanted samples of 9Crl8Mo steel respectively in this in vestigation. SEM was used to observe the topography of the fretted surfaces. AES and micro-region X-ray diffraction were also used to deter mine the elements distribution and phase construction of the implanted surface tilm and wear track surface.

作者对9Cr18Mo钢的氮离子注入试样及未注入试样进行了微动磨损的对比试验，利用扫描电子显微镜对磨损表面的形貌进行了观察，利用俄歇电子能谱仪和微区X-射线衍射仪对氮离子注入试样表面与磨损表面的元素分布及相组成进行了分析。

Expect for a few pittings,the N+1-implanted surface had a best fineness (average roughness Ra≈4.2nm), close to the unimplanted original surface.The N+2-implanted surface had a black dendritic area,and had a poorer fineness (Ra≈16nm).While in the N+10-implanted surface appeared a ripple structure,with the poorest fineness (Ra≈40nm).

但其表面形貌各异：N+1注入的表面除存在少量点蚀坑外，光洁度最高(平均粗糙度Ra≈4.2nm)，接近未注入前的原始表面(Ra≈3.5nm)；N+2注入的出现黑色枝状区域，光洁度次之(Ra≈16nm)，而N+10注入的则出现&波纹&状结构，光洁度最差(Ra≈40nm)。

ABSTRACT Power electronics devices are developed rapidly. There are some factors which influence the protective properties of the devices, including such as electrical characteristics of protection materials, the interface conditions of protective materials-pn junction, the surface effective charge density, the polarizable or unpolarizable properties of organic protective materials, etc.

电力半导体器件是近期发展起来的一类功率电子器件，其表面保护与其它电气元件不同，一方面要考虑器件表面绝缘保护材料的电性能和含杂等因素；另一方面，器件的表面钝化保护材料与器件接触后，器件的界面情况、材料与器件接触带电情况、以及材料所含官能团的极性等情况，也是影响器件性能的主要因素。

One of the tubular elements (11, 12) comprises an unthreaded lip (38; 5) extending between its thread and its free end and having a sealing surface (40; 7) in sealed contact with the opposite surface (41; 8) of the other element after the first and second tubular elements have been screwed, have expanded and generated elastic return forces.

其中二个管形零件(11；12)包括一个延伸在它的螺纹部分和它的自由端之间并且具有一个密封表面(40；7)的无螺纹凸缘(38；5)，这个密封表面(40；7)在旋拧、直径膨胀以及然后产生第一和第二管形零件的弹性恢复力后与另一个零件的相对表面(41；8)密封接触。

Shanghai Protek Protective Film Co.,Ltd is a high-tech company dedicated to provide professional surface protection in the fields of construction, household appliance, plastics, electronics, automobiles etc.. We tailor-make surface protective films in varations to metals, pre-coating metals, plastic sheets, automobile decorative products, LCD, mobiles, name plates etc..

上海普诺泰保护膜有限公司是一家致力于专业提供表面保护膜的科技公司，为建材、家电、塑料、电子和汽车等行业提供全面的表面保护解决方案，为金属、涂层金属、塑料板、汽车内饰、液晶、手机和标牌等产品量身定做表面保护产品。

The results show that the magnetization of Fe overlayers iscrucially determined by the state of GaxS passivation layer and the presence of excess Asafter the anneals.

着重分析了S钝化GaAs衬底的表面化学结构与Fe薄膜磁性质之间的联系，表面化学特性的改变通过改变钝化表面的退火温度来实现。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。