透层 meaning in English
prime coat
Examples
- Application practice of high penetration emulsified bitumen tack coat in construction of high - grade expressway
高渗透力乳化沥青透层在高等级公路中的应用 - As economical and effective measures to ensure the construction quality , prime coat and slurry seal have been used widely in the highway construction
摘要公路透层、稀浆封层技术作为一种经济有效的预防性技术手段在高速公路建设中被推广应用。 - The author reviewed the operational experience and the basic technical indexes of the prime coat and slurry seal of a highway , briefly analyzed the common failing after constructing the prime coat and slurry seal , in addition to the key measure to ensure the construction quality
总结了高速公路透层、稀浆封层的施工经验，对透层、稀浆封层的主要技术指标进行了分析，并指出了透层、稀浆封层施工后的质量通病以及确保施工质量所采取的关键措施。 - Abstract : by means of metallographical examination and sem , the microstructure characteristics , macro - and microfractographs of the brittle broken wheel hull bolt of bj212 automobile have been studied . the results show that the thin - headed screw , with excessively deep carbonitriding layer and hardening layer , has less resistance to brittle fracture in the thin area of its head . at the root of the head connecting the stem , a tensile stress may emerge owing to the non - even quenching stress . those are the two reasons for low torque fracture of bolt
文摘:借助金相、扫描电镜等手段对低扭矩脆断的bj212汽车轮壳螺栓的金相组织特征，宏观和微观断口形貌等进行了研究，结果表明：这种头部薄的螺栓，渗层和淬透层过深，使头部薄区脆断抗力降低，在头部与杆的根部，由于淬火应力不均匀导致根部产生拉应力，均是导致螺栓低扭矩断裂的原因。