The primary forces causing migration of hydrocarbons are buoyancy and capillarity.引起碳氢化合物运移的主要作用力是浮托力和毛细力.Deeper water may ever be drawn back toward the surface of the ground by capillarity.较深处的水甚至也可能由于毛细作用而回升到地面.Of or r...
彩涂板; 钢结构; 异型钢制品制作、加工.Caitu; structural steelwork; Heteromorphosis steel products manufacturing and processing.后臂和前臂上的主要凸缘都使用铸钢制品.Casting steel products are used for main flnges on boom and arm.铌是制造超导钢制品的一种软金属.Niobium is ...