The isostructural crystal SSP with NZP structure was obtained by the above three synthesis methods. 结果表明:3种方法都能合成SSP, 其中以共沉淀法合成的物相最纯,固相法合成的SSP的X射线 衍射强度最大.
关于那些十分引人注意的史前动物――恐龙――的情况,我们知道得不算少.We know a great deal about those fascinating prehistoric animals, the dinosaurs.鉴于恐龙的食量是如此之大,贝克的结论认为恐龙是热血动物.Baker concluded the dinosaurs were warm - blooded because they ate so much.博物馆...
The driver of that taxi-cab seemed to me familiar to the point of impertinence.那辆出租车的司机在我看来放肆到了无礼的地步。His mood of deep pessimism cannot have been leavened by his mode of transport—a black cab...他极度悲观沮丧，而他的代步工具——一辆黑色的出租车，丝...
Now and then they heard the roar of a heavy truck.他们不时地听到大卡车的轰鸣声。A variety of heavy industries grew up alongside the port.各种重工业沿着港口逐渐发展起来。...a sharp short-lived storm with heavy hail.一阵短暂的大雹暴We can not make heavy concess...
原油受到了自然产生的分解油类物质的微生物的侵蚀。The oil is attacked by naturally occurring microbes which break it down.还有更多熟悉的地貌是因地表侵蚀形成的。More familiar landscapes have been sculpted by surface erosion.这会让肥沃的土壤暴露在外，使其容易受到侵蚀。This leaves fertile ...