以下为句子列表：
英文: Analyzed the reason of stress corrosion cracking on U shape brass tube bundle when it is having penetrative test with ammonia, improved technology of test and gave out the method should be paid attention to during the process of brass tube exchanger.
中文: 摘要对黄铜管换热器管束在氨渗试验过程中发生应力腐蚀，导致铜管破裂的原因进行了分析，改进了施工方案，并提出了黄铜管换热器制造过程中对管束进行耐压试验时的注意事项。
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英文: The failure analysis of the heating jacket indicates that the austenitic stainless steel 316L is susceptible to stress corrosion cracking under the combined action of chloride environment and residual stresses induced by welding.
中文: 结果表明：加热夹套开裂的主要原因是316L奥氏体不锈钢不耐氯化物腐性，焊缝有一定的缺陷和腐蚀介质存在，属于一种典型的应力腐蚀失效形式。
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