美国是自然资源丰富的国家,但是由于美国资本主义的高度发展和美苏间的竭力争霸,致使美国对战略物资、包括战略金属资源的需求量极大。由于美国国内的金属资源品种不齐全,其工业发展和军工生产的许多必不可少的重要战略金属资源不得不依靠进口。 The United States is a country rich in natural resources. However, due to the high degree of capitalism in the United States and the hegemony of the United States and the Soviet Union, the United States has a huge demand for strategic materials, including strategic metal resources. Due to the incomplete variety of metal resources in the United States, many of the indispensable important strategic metal resources for industrial development and military production have to rely on imports.