长达25英里的交通拥堵阻塞了M6号高速公路的北行车道。A 25 mile traffic jam clogged the northbound carriageway of the M6.唯一的问题就是大量水草阻塞了水道。Large, clogging banks of weed are the only problem.在威尔士的中部地区，6英寸厚的大雪阻塞了道路。In Mid-Wales six inches of snow blo...
当管受到挤压时,胶凝体便从微小的孔被挤入.When the tube is squeezed the gel is forced through tiny holes.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.Macro - defect - free cements have become an important orientation of high performance cementitious materia...