Mechanical degradation caused by defective devices or sticking tapes, by aging or defective storage.
机械降解，造成有缺陷的设备或磁带坚持，老化或有缺陷的存储。
Conclusion: From the point of view of mechanical strength and degradation performance, Chitosan membrane meet the requirements of guided tissue regeneration.
结论：从材料的机械性能和降解性能上看，壳聚糖膜基本符合用于引导组织再生的要求。
Polyacrylamide with ultrahigh molecular weight is easily to degradate such as mechanical, chemical and thermal degradation, it make molecular weight descend.
超高分子量聚丙烯酰胺易发生机械降解、化学降解、热降解反应，造成分子量下降。
The crystallinity of PLA has great influence on its mechanical properties and degradation rate, so the crystallization behavior of PLA has also attracted many researchers to widely research.
聚乳酸的结晶性能对其力学性能和降解速率有着重要的影响，因而其结晶行为也逐渐成为人们研究的热点。
The rheological property indicates the machinability of the blend and the mechanical property of the blend after the addition of starch decreased but the degradation property speeded up.
流变特性表明共混物可加工性，添加淀粉母料的共混物的力学性能有所降低而降解性加快。
The general methods of recycling waste polyester include mechanical recovery, chemical modification, chemical degradation and so on.
常见的废聚酯处理方法包括机械处理、化学改进、化学降解等。
The strength degradation ratio and strain energy loss were selected as damage indexes to analyze the deterioration law of the mechanical properties of concrete in different co.
采用强度退化率和应变能损失率为损伤指标，对不同腐蚀程度混凝土力学性能的退化进行分析。
Lignin has influences at different extents on mechanical properties, ageing property, thermostability and thermal degradation of plastics.
木质素对塑料的力学性能、老化性能、热稳定性、热氧降解性能等都有不同程度的影响。
MAIN OUTCOME MEASURES: Mechanical characteristic and degradation characteristic.
主要观察指标：物理力学性能，降解性能。
During the long operational time, the film insulation is exposed to the electrical, thermal and mechanical stresses, which will cause insulation degradation and lead to breakdown finally.
绝缘薄膜材料在长期的运行过程中，受到电、热、机械和环境因素的联合作用，其性能将因此逐渐变坏，并最终导致绝缘击穿。
Silk offers an alternative for scaffolds engineering for its biocompatibility, unique mechanical properties and slow rate of degradation.
蚕丝具有生物相容性、优异力学性能、较慢的降解速度，为组织工程支架的构建提供了新的选择。
The degradation action of magnesium and its alloys makes them very attractive for biodegradable implants, and they have appropriate mechanical properties as well as good biocompatibility.
镁及镁合金的降解行为使得它作为生物可降解植入材料有很大的吸引力，并且其具有合适的力学性能和良好的生物相容性。
Actions such as thermal degradation, mechanical breakage and the like exist in the steam explosion process.
在蒸汽爆碎过程中存在热降解和机械断裂等作用。
Secondly, discuss the influence of the electrical, thermal and mechanical aging -on insulation degradation.
以及绝缘介质是如何在热、机械应力和脉冲电压的作用下老化继而失效的。
RESOMER? products with their adjustable degradation rate and variable mechanical strength offer the right choice for biodegradable implants.
RESOMER系列产品的降解速度和物理强度均可调节，正好是可生物降解植入体的理想选择。
Thermal stress, changes of minerals formation and microstructure due to temperature result in the changes of mechanical properties and degradation of sandstone.
温度引起的热应力作用、矿物组分和微结构变化导致砂岩力学性质发生改变与高温劣化。
The thermal stress, variations of mineral formation and microstructure due to the temperatures result in the variation of physical and mechanical properties and degradation of limestone.
温度引起的热应力作用、矿物组分和微结构变化导致石灰岩物理力学性质发生改变与高温劣化。
With the aging time increasing, degradation effect became more superior, mechanical property and crosslink density decreased, while Compression permanent distortion increased.
但继续老化后，主链断裂逐渐占据主导地位，发生了氧化裂解，使橡胶力学性能和交联密度下降，压缩永久变形率增加；
When the oxygen fuel ratio is too low, slow particle flight speed and insufficient melt are the main reasons for the degradation of the coating compactness and mechanical properties.
氧燃比较低，粒子飞行速率低和熔融不足是涂层致密性和力学性能下降的主要原因；
The experiment results showed that the mechanical properties of the films approximated to that of LDPE film, and the films had good photo-degradation properties.
该薄膜的力学性能接近纯聚乙烯薄膜，并具有较好的光降解性能；
The experiment results showed that the mechanical properties of the films approximated to that of LDPE film, and the films had good photo-degradation properties.
该薄膜的力学性能接近纯聚乙烯薄膜，并具有较好的光降解性能；
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