Corrosion steel is an important issue of the durability of steel, but also the process of building safety appraisal problems often encountered.
钢结构腐蚀是影响钢结构耐久性的一个重要问题，也是建筑物安全鉴定过程中经常遇到的问题。
The SPT probe failures that are often encountered during operation not only decrease the accuracy of STP result, but also affect the efficiency of SPT.
静力触探探头在使用过程中经常出现故障，既影响触探试验结果的精度，又影响触探试验的效率。
The SPT probe failures that are often encountered during operation not only decrease the accuracy of STP result, but also affect the efficiency of SPT.
静力触探探头在使用过程中经常出现故障，既影响触探试验结果的精度，又影响触探试验的效率。
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