The utility model relates to a back-pressure gauge valve which is freeze proof and theft proof.
本实用新型涉及一种防冻、防盗回压表阀。
The principles, structure and mode of the freeze proof and electrical heating device for plug doors are described.
介绍了塞拉门防冻电热装置的原理、结构、形式。
Finally, the quantitative design method for the freeze proof durability of concrete is suggested, according to the present condition of the country.
根据我国的实际情况，初步探讨混凝土抗冻性定量化设计的方法。
Via experiment and analysis, the technical specifications of the freeze proof and electrical heating device for plug doors as well as the inspection requirements are put forward.
通过实验分析，提出了塞拉门防冻电热装置的技术条件和检验要求。
The water and freeze proof Casio EX-G1 is designed with shock-resistant elements throughout the camera, both inside and out, creating a smart look in a slim-line camera with functional beauty.
大意为，卡西欧G1开创了三防数码相机也可以同时兼具超薄漂亮的外观和防水、防冻以及防摔等元素，除此正常的拍摄功能之外，G1还提供了多种不同的拍摄模式可供使用者选择。
The investigations of concretes leak-proof, freeze-proof and chemical corrosion-proof have been confirmed that the new alkali-slag concrete has possessed a good merit of durability.
抗渗、抗冻及抗化学侵蚀试验表明，新型碱矿渣混凝土具有优异的耐久性能。
The investigations of concretes leak-proof, freeze-proof and chemical corrosion-proof have been confirmed that the new alkali-slag concrete has possessed a good merit of durability.
抗渗、抗冻及抗化学侵蚀试验表明，新型碱矿渣混凝土具有优异的耐久性能。
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