A four-day conference on Willa Cather,Gertrude Stein,F.Scott Fitzgerald,Ernest Hemingway and their contributions tomode......

ALL of Li Changxing’s photographs are of nature, a constant theme that makes him more a romantic lyricist than a photo......

雷电放电的随机性以及雷电先导在其产生和发展过程中易受周围环境影响的特点导致雷电活动对电力系统产生巨大危害.采用有限凝聚扩......

机械锻锤是一种依靠落下部分重力位能实现锻件变形的单工位锻造设备，投资建造成本低，结构简单，锻造生产能耗低，能效好，在珠三角地区应用......