美国机床工业兴衰之原因美国机床工业１９７９年产量达到历史顶峰，以后逐年下降从１９８１年到１９９２年持续１０年之久。出现这种衰退的原因有五点：（１）由于大企业集团间的激烈争斗，产生了托拉斯之类的垄断性企业，削弱了美国机床业的传统和团结性。同时工业家对开... Reasons for the Rise and Fall of the U.S. Machine Tool Industry In the United States, the machine tool industry reached its historic peak in 1979, after which it dropped from 1981 to 1992 for 10 years. There are five reasons for this recession: (1) monopolistic businesses such as trusts have emerged as a result of fierce fighting among large conglomerates, weakening the tradition and solidarity of the machine tool industry in the United States. At the same time industrialists off ...