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...
The children put on an impromptu concert for the visitors.孩子们为来访者即兴献上了一场音乐会。There were also comedy acts, impromptu skits , and DJ music to fill the lulls between acts.也有充满在行为之间的间歇的喜剧行为, 即兴之作若干, 和DJ音乐.I quite by chance go...