A bounty of $50,000 was put on Dr. Alvarez's head.有人悬赏50,000美元买阿尔瓦雷斯博士的人头。Not everyone experiences the kinds of severe chronic stresses Alvarez describes.并非所有人都经历着爱瓦瑞斯所描述的这种严重的长期压力.Alvarez Paz, 67 , is currently in ...
The sisal pulp and aramid fiber were chose to fabricate the wet paper - base friction materials.本文采用高性能芳纶纤维和剑麻纤维为原料制备湿式纸基摩擦材料.Porous adonic aluminum oxide templates are widely used to fabricate nanowires or nanotubes of ...