This research lays down a base for assessing fatigue reliability of the aging structures.
该研究为长寿命承力结构的疲劳可靠性评定奠定了基础。
It's also the largest dam removal in the history of a country with 80,000 of the man-made structures, many of them aging, silting up, and no longer useful (or at least necessary).
这也是美国历史以来最大规模的大坝拆除项目，将拆除80,000个人造构件，其中大多数已经老化，淤塞，无用(至少是不必要了)。
Structures are always subjected to various adverse factors during its long-time service, such as fatigue, environmental corrosion, material aging, etc.
在结构长期服役期间，疲劳、环境腐蚀和材料老化等因素的作用会引起结构损伤的累积。
As service life of buildings approaching to projected life, or their structures entering aging stage, people are gradually concerned about the health status of the structure and security estimation.
随着我国部分房屋建筑使用年限接近设计期限，或者说结构进入老化阶段，结构的健康状况和安全性评估逐步引起人们的关注。
Analyzing damage tolerance capability of structures with multiple fatigue cracks is an important task for the current assessing of structural fatigue reliability of aging airplanes.
一般环境下疲劳多裂纹结构的概率损伤容限分析方法已经比较成熟。
In comparison with the coatings applied presently for aircraft structures, the nano-composite coatings showed better anti-aging performance to UV radiation.
与现役飞机涂层相比，纳米复合涂层的抗紫外线老化性能有明显改进。
The information of stable isotopic aging is the important basis for the deep structures, mineralization and chronostratigraphy.
稳定同位素测年信息，是深部构造、成矿作用和地层年代学的重要依据。
The information of stable isotopic aging is the important basis for the deep structures, mineralization and chronostratigraphy.
稳定同位素测年信息，是深部构造、成矿作用和地层年代学的重要依据。
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