以下为我国四大机床产业，仅剩一家苦苦支撑，国家重器为何落末？内容:
一个国家想成为一个制造大国，就离不开技工、机床和冶炼。在这三大支柱中，机床是机械制造业的摇篮。然而，我国的机床行业在经历了短暂的蓬勃发展期后，陷入了发展缓慢的困境之中。
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