Polyanhydrides are one kind of biomaterial with characteristics of surface degradation and good biocompatibility.
聚酸酐是一类具有表面降解特性的生物医用高分子材料，具有良好生物相容性。
Concerns include the degradation of surface and groundwater owing to poultry waste nutrients and pathogenic microorganisms.
令人担忧的问题包括家禽粪便养分和病原微生物造成的地表水和地下水退化。
The results showed that UV radiation mainly led to crystal destruction and molecular degradation on the surface and recrystallization on the interior part of the sample.
结果表明，紫外光的照射主要导致聚甲醛试样表面层发生晶体破坏和无定形部分分子链降解，内层则主要发生非晶区重整结晶；
The rapid degradation of corrosion resistance of alloy is attributed to the dissolution of both cobalt and cobalt oxide on the surface at high SO3 levels.
当处于较高的SO 3分压时，钴或氧化钴在合金表面熔盐中的溶解是造成合金抗腐蚀性能退化的原因。
Surface loss of colour and gloss in a coating from degradation of the binder by the UV components in sunlight. Can be seen as a white deposit on the cured coating surface.
在阳光下曝晒由于UV的作用使得结合料降解，从而使涂层表面的颜色、光泽发生损失，可以看到在固化涂层的表面出现白色物质。
The simulational results also show that the degradation of gain induced by surface effects can be slowed down in a gradual base structure.
模拟还表明基区缓变结构可以减少表面复合，提高电流增益。
Nano-TiO2 retarded the degradation of PPS chains to form oligomers caused by UV irradiation, but caused more -OH group in the surface of PPS composites.
纳米氧化钛的加入抑制了因紫外光引发造成的聚苯硫醚分子链的降解。
The mechanism of decreasing sinter degradation index by spraying halide at its surface is introduced.
介绍了喷洒卤化物，降低烧结矿粉化率的机理。
SEM, DSC and GPC show the degree of bacterial degradation on the surface of copolymer was depended on the ratio of hydrophilic and hydrophobic unit content.
GPC测试表明，偶氮聚合物的菌解程度取决于共聚物中亲疏水成分含量。
The infrared spectra of the activated carbon indicated that, during the process of ozonation, there were a large number of organic degradation products adsorbed on the activated carbon surface.
催化臭氧化反应前后活性炭的红外谱图表明其表面吸附有大量有机降解物。
The SEM photos showed the surface of the stents turned from initially smooth into rough and the cross-sections turned from compact into porous during degradation.
电镜观察证实，每组胆总管内置支架表面随时间的延长由光滑变得粗糙，其截面由致密逐渐变得疏松。
Effect of TiC coating on electrode tip surface on electrode degradation during micro-resistance spot welding;
本文主要研究了微型点焊镀镍钢板和镍板时电极失效的机制。
Effect of TiC coating on electrode tip surface on electrode degradation during micro-resistance spot welding;
本文主要研究了微型点焊镀镍钢板和镍板时电极失效的机制。
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