涨潮和落潮交替更迭.The flood and ebb tides alternates with each other.渔船趁着落潮出航.Fishing boats were standing down with the ebb.他们喜欢在落潮时沿着海滨散步.TIDE They liked to walk along the beach at low tide....
Advances in ethane dehydrogenation to ethene have been reviewed.乙烷脱氢制乙烯是乙烷利用的有效途径.Results show that PCE was dechlorinated reductively to DCEs and TCE, probable VC and ethene.结果表明:在微生物的作用下PCE还原脱氯为TCE和DCEs, 可能有VC和乙烯....
The alveolar macrophage is derived largely from the bone marrow.肺泡巨噬细胞主要是从骨髓中分化出来的.The alveolar macrophage is particularly rich in the variety of proteolytic enzymes.肺泡巨噬细胞特别富含各种蛋白质水解酶.At any time the macrophage system m...
阿里安航天火箭项目取得了辉煌的成功。The Ariane space-rocket project has had a shining success.不久之后，国防开支的削减迫使航空航天业紧缩开支。Shortly afterwards, cuts in defence spending forced the aerospace industry to retrench.英国航天部门2万多人面临失业的危险。At stake are mo...