宏微观分析。
According to the experiments of macro and micro analysis, the techniques put forward in this paper are available.
通过宏观质量评价和微观质量测定，证明本文提供的技术是可行的。
The macro and micro analysis of fracture indicates that it produces fracture because it doesn′t avoid welding stress in time.
根据断口的宏、微观形貌，认为油管焊接后未及时消除焊接应力，产生了淬硬裂纹；
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