Nothing cements a friendship between countries so much as trade.贸易最能增强国家间的友谊。Macro - defect - free cements have become an important orientation of high performance cementitious materials.无 宏观 缺陷水泥已成为高性能胶凝材料学科的重要研究方向.To s...
Locally dolomite and anhydrite are important as cements.局部地方白云石和硬石膏也是重要的胶结物.Locally dolomite and anhydrite are important as cements , together with minor authigenic quartz.在局部地方白云石和硬石膏也是重要的胶结物;还有少量自生石英.Macro - defect - f...
Around 1840 the floor length skirt returned , but this time stiffened around the circumference by horsehair.在叼840年前后,极地长裙再次流行, 只不过这次是采用马尾水支撑形状.It's a mile round the circumference of the field.运动场周长一英里.the circumfere...
We hold our records on microfilms.我们把记录保存在缩微胶卷上.The tribochemical mechanisms include the formation of microfilms on coatings and the oxidation of coatings.摩擦化学原理包括涂层表面化学保护层的生成、涂层的氧化等方面的理论.At the bottom of the basket lay ...