The ultrasonic phased array system for monitoring the expanding of weld defect in steel bridge was researched.
研制了针对钢结构桥梁焊缝缺陷扩展的超声相控阵监测系统。
The most common and severe defect is the bridge cracking problem, which has seriously affected the normal usage of Bridges and become the urgent problem in the engineering field.
其中最为普遍和严重的便是桥梁裂缝问题，已经严重影响了桥梁的正常使用，成为工程界亟待解决的问题。
Bridge phenomenon is a frequent defect in wave soldering, which have many affected factors.
桥连现象是波峰焊接过程中最常见的一种焊接缺陷，其影响因素是多方面的。
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