认识保护层的主要作用，对提高水运工程混凝土结构使用寿命具有重要意义。
It is of great significance to recognize the main functions of protective cover for prolonging the service life of maritime concrete structures.
加固是提高钢筋混凝土结构安全度、减少事故隐患，延长结构使用寿命的有效方法。
Reinforcement is an effective way of improving the structural safety, decreasing accidents, prolonging the life of concrete structure.
外包钢加固是提高钢筋混凝土结构安全度、减少事故隐患，延长结构使用寿命的有效方法。
Strengthening by steel armoured is an effective method for increasing degree of safety and decreasing possibility of accident and elongating service life in the reinforced concrete structure.
基于钢筋锈蚀的混凝土结构使用寿命预测的一个重要问题是建立混凝土内钢筋锈蚀速率模型。
To establish the theory prediction model of reinforcement corrosion rate in concrete is the key to the service life estimation of reinforced concrete structure with regard to reinforcement corrosion.
设计了一个BP神经网络网络模型来分析解决这一问题，研究处于硫酸盐侵蚀下混凝土结构使用寿命与环境侵蚀介质间的关系。
BP neural network model is designed to analyze and solve the problem, the relationship of operational life of concrete construction and environmental corrosion mediator.
因此，研究重载交通条件下路基工作区深度及相应的工程防治措施，对提高等级路道路结构使用寿命具有十分重要的工程和现实意义。
Therefore, it is very important and realistic for the pavement engineering to investigate the subgrade work area depth and its impact factors and the effect on the pavement structure.
它具有结构简单、体积小、重量轻、使用寿命长等优异的特点。
It is simple in structure, small volume, light weight, long life and other excellent characteristics.
目前各油田的抽油设备主要仍为常规游梁式抽油机，其主要原因是该机结构简单，操作维护方便，使用寿命长。
The conventional pumping unit is still the main pumping unit in the field at present, the main reason is that its structure is simple, operation and maintain are convenience, and its use life is long.
焊接结构简单，调节方便，使用寿命长等特点。
Welded structure is simple, convenient, long life and so on.
并具有结构紧凑，扩展组合简捷，使用寿命长，维护开支少等特性。
And has compact structure, the expansion of portfolio of simple, long life, less maintenance expenditure and so on.
特殊结构，增加了使用寿命。
特殊化控制系统设计，内部结构采用防酸、碱设计，延长使用寿命。
Special control system. The internal structure applies acid-proof and alkali-proof design, so as to prolong the product life.
结构的耐久性是结构必须满足的基本功能之一，既与设计、施工和材料等因素有关，又与使用环境和维护维修等条件有关，它直接影响结构的使用寿命。
Durability of structure is one of the basic function which structure is essential, it is closely to design, construct, material and employ environment, maintenance, it direct to effect working life.
针对PA6+60%GF的材料的磨损和腐蚀特性，我们的热流道系统选用了特殊的材料及特殊的浇口结构，以保证系统的使用寿命！
In terms of the PA6 + 60% GF wear and corrosion properties of material, we choose the special materials and special gate structure to prolong system longevity.
预应力混凝土连续箱梁桥的开裂可以说是“多发病”，影响着构件的外观、使用寿命，甚至结构安全。
Cracking is quite common in prestressed concrete continuous box girder bridge, which influences appearance of component, life span of using, and even safety of structure,.
文内见解对延长十字轴万向联轴器的使用寿命和结构的改进具有一定指导意义和参考价值。
This paper will have certain direct significance and referential value for prolonging the usage life and improving the structure of the cardan joint.
ZED的结构被设计为120年使用寿命年或者更长。
高等级公路排水系统对于保障公路结构物的使用寿命和行车的通畅、安全具有十分重要的作用。
Drainage system of high-grade highway plays an important role in ensuring the lifetime of structure, avoiding traffic jam and securing vehicles.
利用焊缝金属组织转变的方法可以在焊接过程中直接降低焊接残余拉伸应力，甚至产生残余压缩应力，有效地提高焊接结构的使用寿命。
Utilizing the transformation of bead metal can reduce tensile stress directly in the course of welding, even produces compressive stress, to improve the service life of welding structure effectively.
搅拌筒为带衬板结构，搅拌机架体使用寿命长。
Stir cylinder liner for the band structure, mixer body is long life.
焊接结构的疲劳寿命通常分为工艺寿命和使用寿命。
The fatigue life of welding structures includes technological life and service life.
此种结构一般采用螺栓连接，其连接处的疲劳特性往往决定了结构的使用寿命。
Most commonly, bolted joints are adopted to connect laminates to other structures, and the fatigue properties of joints affect the service life of jointed structures seriously.
从工程轮胎的正确使用、路面管理、结构、配方和工艺等方面提出了提高工程轮胎使用寿命的几条重要措施。
Several measures of raising the service life of engineering tire were given from the right using method, road manage, structure, formula and process of the engineering tire.
实例说明该方法简单适用，最终实现了舰船装备结构剩余使用寿命的预测。
The practical examples show the method is simple and applicable, and can realize remanent life prediction for warship equipments.
采用复合材料补片对损伤的金属飞机结构进行胶接修理，可以经济而有效地恢复结构的承载能力和延长结构的使用寿命。
It is most economical and effective to renew the load carrying capability and extend the service life by employing composite patches for repair of damaged metallic aircraft structures.
介绍我国电铲用填塑钢丝绳的结构、使用寿命等情况，剖析进口电铲用填塑钢丝绳的结构参数。
To introduce the wire rope structure and service life situation of solid polymer covered and filled rope for electric shovel in China.
指出路面结构支撑条件、界面条件和层间刚度差是影响路面结构受力与使用寿命的三要素。
And pointing out three factors which influence the stress and service life, they are poling condition of pavement structure, the interface and the rigidity difference between layers.
使用寿命预测是结构安全性评估的一个重要方面。
Service life prediction is an important aspect of structural safety evaluation.
使用寿命预测是结构安全性评估的一个重要方面。
Service life prediction is an important aspect of structural safety evaluation.
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