A DISCUSSION ON THE DETECTIVITY OF THE CONVENTIONAL NONDESTRUCTIVE TESTING METHODS FOR THE SURFACE CRACKS IN THE CIRCULAR WELDS OF STEEL PIPES是什么意思_A DISCUSSION ON THE DETECTIVITY OF THE CONVENTIONAL NONDESTRUCTIVE TESTING METHODS FOR THE SURFACE CRACKS IN THE CIRCULAR WELDS OF STEEL PIPES在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句