从理论上推导出了变形功、冷却速度、无形变时的品粒尺寸与有形变时的晶粒尺寸之间的关系,计算值与实验值吻合较妤.研究结果表明:......

Between the 1940s and the 1960s there was a significant lowering of the surface temperatures of the central North Pacifi......