后表面

Then, cellular PP films were modified by extraction, oxidation and fluorination in a hydrofluoric acid solution.

红外分析和断面的X射线能谱分析表明，经过相继的化学处理(表面小分子萃取、氧化处理和氢氟酸处理)后，PP孔洞薄膜生成了具有一定(来源：A59BCc747论文网www.abclunwen.com)深度的氟化层。

The developing principle of MB gypsum fine foamer which takes compound honey-locust abietic acid anionic surfactant as principal composition,is analyzed in theory.

从理论上分析了以复合型皂角松香酸类阴离子表面活性剂为主要成分的MB石膏微发泡剂的研制原理，详细研究了MB微发泡剂在石膏料浆中的起泡条件、起泡性能及其对硬化后的建筑石膏物理力学性能的影响，MB微发泡剂与现有发泡剂的性能比较，MB微发泡剂在纸面石膏板中的应

The results show that the periodic average yield of acrylonitrile under any forced periodic oscillation of oxygen concentration among this experimental conditions,thus obtained could higher than that under the steady-state condition.

而为完成整个氧化还原循环过程，气相氧分子就必须在不同丙烯吸附中心的再氧化中心上吸附，获得电子，解离后扩散进入催化剂中的阴离子孔穴，如图1所示。从该机理可知，反应气氛中的氧烯比大小对催化剂表面的氧化还原反应过程的循环有重大影响。

First direction with said motor and rotated in a second direction independently of said motor and gear train; and a governor for inhibiting rotation of said spool gear when it is independent of said motor and gear train, said governor including a governor gear mounted on said frame independently of said motor and gear train, said governor gear being meshed with said spool gear to rotate in unison therewith, and said governor gear 6 including means for inhibiting its rate of rotation in the form of a spring for fractionally engaging said governor gear with a friction surface.

登录后回答可以获得经验值奖励，并可以查看和管理所有的回答。登录|第一个方向与电机和说，在独立的第二个方向旋转说，电动机和齿轮列车；和抑制旋转的齿轮轴省长说，当它说，独立的电机和齿轮火车，省长说，包括一名省长说齿轮安装在框架独立说，电机和齿轮传动，齿轮说，州长说，目前啮合齿轮轴旋转异口同声地订定条文，并表示州长齿轮包括指在一个弹簧的形式抑制它的自转速率为小幅省长说，从事齿轮的摩擦表面。2。

The papered-over cracks in front- bench unity were now beginning to show through.

内阁大臣团结一致的表面后所掩饰的裂痕现已逐渐暴露出来。这男子躺在硬长凳上睡着了。

Application method: Take the automobile windshield size as the example, when first use the blue clear glass will guard against the fog frostproof cleaning liquid to spurt evenly executes in the glass surface, latter evenly with towel or with together hand towel chemical fiber class material for good

使用方法：以汽车挡风玻璃大小为例，第一次使用时将碧清玻璃防雾防冻清洁液均匀喷施在玻璃表面，后均匀用毛巾或用一块方巾（化纤类材料为佳，如餐厅的消毒由大小即可）擦拭在玻璃上即可。

ObjectiveTo evaluate the effect of chemical compounds of Galla Chinensis on the remineralisation of initial enamel carious lesions by scanning electron microscope in vitro.

目的观察pH循环后中药五倍子化学成分对早期龋表面形态变化的影响，了解中药五倍子化学成分对人工早期釉质龋的再矿化作用。

Pure iron specimens were implanted by nitrogen ions with a fluence of 7×1017 ions/cm2 using ion beam implantation at an extracted voltage of 40kV.Composition and valence studies were carried out by X-ray photoemission spectroscopy;Glancing angle X-ray diffraction was employed to examine the phase transformation.

采用40kV的氮等离子体离子注入工业纯铁，注入剂量为7×1017ions/cm2，X射线光电子能谱研究表面注入层元素的成分和价态，X射线衍射分析注入层的物相转变，采用恒电位极化腐蚀试验研究了离子注入后材料在人工模拟体液中腐蚀行为。

Background: Biologic glenoid resurfacing was developed in 1988 as an alternative to total shoulder arthroplasty in selected patients with primary, posttraumatic, or postreconstructive glenohumeral arthritis.

背景：关节盂表面生物学重建是1988年作为全肩关节置换术的一种替代治疗发展起来的，应用于具有原发性、创伤后或重建术后盂肱关节炎的某些患者。

Background: Biologic glenoid resurfacing was deeloped in 1988 as an alternatie to total shoulder arthroplasty in selected patients with primary, posttraumatic, or postreconstructie glenohumeral arthritis.

背景：关节盂表面生物学重建是1988年作为全肩关节置换术的一种替代治疗发展起来的，应用于具有原发性、创伤后或重建术后盂肱关节炎的某些患者。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。