delayed cracking

• 延迟裂纹

delayed cracking的用法和样例：

例句

1. The hydrogen-induced delayEd crack and the embrittlement of coarse-grained HAZ are the main problems influencing the welding quality.
   焊接质量问题主要表现在出现氢致延迟裂纹和焊接粗晶区的脆性。