TWO MAIN POINTS IN RADIOGRAPHIC INSPECTION OF THE CIRCUMFERENTIAL WELDS IN PIPES BY OBLIQUE DOUBLE-WALL SINGLE-IMAGE TECHNIQUE是什麼意思_TWO MAIN POINTS IN RADIOGRAPHIC INSPECTION OF THE CIRCUMFERENTIAL WELDS IN PIPES BY OBLIQUE DOUBLE-WALL SINGLE-IMAGE TECHNIQUE在線翻譯_英語_讀音_用法_例句