Coatings based on alkyd resins tend to be relatively low cost but exhibit poor durability.
在多元醇酸树脂为基础的涂料成本较低但耐久性不佳。
Most damage of concrete runway in cold region is not caused by load but by the poor durability of concrete.
寒冷地区机场混凝土道面常常发生非荷载引起的破坏———耐久性破坏，严重影响飞机的安全起降，必须尽快予以解决。
Poor durability, short service life and low economical efficiency of Bridges have become a worldwide difficult problem.
桥梁耐久性差、服务寿命短及全寿命经济性指标差等问题已成为世界性难题。
The invention solves the problems of low damping capability and poor durability of the conventional concrete structure material per se.
本发明解决了现有混凝土结构材料自身阻尼能力低、耐久性差的问题。
Currently, substitute materials exist many defects, such as thrombus, calcification, and poor durability, most notably is the low level of endothelialization, all of which affect treatment.
目前替代材料存在血栓、钙化、耐久性差等诸多缺陷，最显著缺陷为内皮化程度低，从而影响治疗效果。
However, like general reinforcement concrete structure, a main problem in prestressed concrete is the poor corrosion resistance of steel tendon which may lead to the lower durability construction.
然而和普通钢筋混凝土一样，预应力混凝土中存在的一个主要问题是钢筋抗腐蚀能力弱，结构耐久性差。
As for the disadvantages existed in the torque sensors, such as poor installation convenience, accuracy, stability and durability, the new holder type torque sensor was developed.
针对目前录井现场各类在用扭矩传感器存在的安装方便性、精度、稳定性和耐用性差等不足，开发研制了新型夹持式扭矩传感器。
Due to their poor chemical durability, it is proposed to coat a layer of organosilicon (with 97% visual light reflectance) on the glass surface which will dramatically improve their chemical duration.
这类玻璃的化学稳定性较差，当表面涂以可见光反射率为97%的有机硅层后，稳定性显著提高。
But the disadvantages of its poor skid-resistance durability and higher noise always puzzle road engineers and researchers in all kinds of countries.
然而水泥混凝土路面抗滑持久性差、噪声大的缺陷却长期困扰着各国道路工作者。
But the disadvantages of its poor skid-resistance durability and higher noise always puzzle road engineers and researchers in all kinds of countries.
然而水泥混凝土路面抗滑持久性差、噪声大的缺陷却长期困扰着各国道路工作者。
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