单词：quenching crack
quenching crack的用法和样例：
例句
- Results show that the crack is mainly intergranular and there is no decarburization and oxidation at the edge of the crack.根据齿座表面裂纹主要呈沿晶扩展，裂纹两侧无脱碳和氧化现象，认为该裂纹为淬火裂纹。
- In addition, quenching cracks in the release valve arise from the stress concentration at incisions of valve intracavity.而淬火裂纹系因泄放阀体内腔刀痕的应力集中而产生的。
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