| 1. | Life evaluation of class b insulation systems for series - excitation motor of electric tools
电动工具用串励电动机b级绝缘结构寿命的评定 |
| 2. | Additionally , prolonged vibration makes the fatigue of structures increased
另外，持续的振动也加速了结构的疲劳破坏，影响结构寿命。 |
| 3. | In this paper , the assessment procedure for service life of r . c . structures in the marine environment is presented , and this assessment procedure is used successfully in r . c
据此提出了海洋环境下混凝土结构寿命评估的方法，并用于连云港西大堤钢筋混凝土护栏的锈裂损伤评估。 |
| 4. | Palram coverings help control climatic conditions , eliminate condensation dripping , confront weathering and chemical issues and allow your agricultural structures to last longer
帕拉姆板材可以抵御恶劣天气影响、防止滴露、减缓自然侵蚀和化学物质腐蚀，使您的农用结构寿命更加长久。 |
| 5. | The purpose of repair and reinforcement is to improve intensity 、 hardness 、 lengthening 、 stability and enduring of the structures and components ， to meet the need of security , to improve function of employment ， to prolong the time of structures
补强与加固的目的就是提高结构及构件的强度、刚度、延性、稳定性和耐久性，满足安全要求，改善使用功能，延长结构寿命。 |
| 6. | In very aggressive environments , the material degradation and structural distress arising from steel corrosion can dramatically reduce the useful service life of structures , affect their strength , stability and safety , and indeed , even lead to premature failure
在严苛的侵蚀性环境下，因钢筋腐蚀所引起的材料劣化与结构损害，会降低结构寿命，影响其强度、稳定度与安全性，而且导致提前毁坏。 |
| 7. | On the studies of service life prediction , rc structural members in atmospheric environments and marine environments are discussed according to the existed service life prediction theory and different end criterion of service life
在结构使用寿命预测的研究方面，作者根据不同的寿命终结标准和目前已有的结构寿命预测理论，对大气环境和海洋环境中的钢筋混凝土构件的使用寿命预测做了一些探讨。 |
| 8. | Using fractal dimension defining damage variable and building macro and micro - fatigue damage evolution model of structure are suggested in this paper . the variety of damage which is not easy macro - measured to ti alloy tc11 whose material structure is high intensity can reflect fatigue damage process effectively by studying the relation between fracture and structure life
本文研究表明：采用分维数定义损伤变量，建立结构的宏细观疲劳损伤演化模型，尤其是对于tc11钛合金这样的高强度材料结构，损伤量变化不易宏观测量，可以通过断口分维数与结构寿命关系的研究，有效地反映疲劳损伤过程。 |
