2019-11-11 14:46:08
sawchina
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DIN EN 1713-2002 焊缝的无损检验.超声波检验.焊缝的表示特征Non-destructive testing of welds - Ultrasonic testing - Characterization of indications in welds 下载地址：
链接：https://pan.baidu.com/s/1dj0n0esIPdG9Gt3BQ_DbPA |
