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一、前言在压力容器的焊接制造过程中,由于各种客观因素的影响,不可避免地要产生各种焊接缺陷。当这些缺陷超过规范要求
First, the preface In the pressure vessel welding manufacturing process, due to various objective factors, inevitably have to produce a variety of welding defects. When these defects exceed the specification requirements