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1)  resistance to slow crack growth
耐慢速裂纹增长
1.
This paper reviews three main tests including notch pipe test(NPT),full-notch creep lest(FNCT) and Pennsylvania notch test(PENT) through which the resistance to slow crack growth behavior of polyethylene is evaluated.
介绍了评价管材料耐慢速裂纹增长性能的3种实验方法:管材切口实验、全切口蠕变实验和宾夕法尼亚州切口实验的研究进展情况,并对3种方法进行深入分析和对比,可为管材料的研究和性能评价提供参考。
2)  slow crack growth
慢速裂纹增长
1.
Slow Crack Growth Resistance of the Polyethylene Pipes Prepared by Mandrel Rotating Extrusion
旋转挤出聚乙烯管的耐慢速裂纹增长性能研究
2.
The mechanism and influencing factors on slow crack growth resistance of PE pipes were reviewed in the paper,and the countermeasures to improve the slow crack growth resistance of PE pipes were presented finally.
耐慢速裂纹增长性能是提高聚乙烯(PE)管材耐用性的关键因素。
3)  slow-crack-growth
耐慢速裂纹扩展
4)  slow-growing-cracks
慢速裂纹
1.
This paper discussed the factors that induced the "slow-growing-cracks" in the wall of polyethylene tube in the light of molecular structure.
从分子结构的角度讨论了聚乙烯管材发生慢速裂纹扩展的影响因素,并指出了主要的影响因素为系带分子数量、分子量及分子量分布、支化密度、支链分布、片晶厚度和片晶之间的距离。
5)  Rapid Crack Propagation
快速裂纹增长
1.
It is of utmost importance for continuous development of plastics pressure pipe to set up and perfect the quality assurance system against the risk of rapid crack propagation and for the necessary long service life ____long term strength.
建立和完善快速裂纹增长危险和长期寿命—长期强度性能的质量监控体系对塑料压力管持续发展至关重要。
6)  cracks growth(△a)
裂纹增长(△a)
补充资料:雨中花 仆自幼刻意林壑,不耐俗事,懒慢之
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