rail flaw detector 中文意思是什麼
rail flaw detector
解釋
鋼軌探傷儀-
Verification regulation of iii - mode ultrasonic flaw detector for rail
三型鋼軌探傷儀檢定規程 -
Calibrater of ultrasonic flaw detector for rail
鋼軌探傷儀檢定儀
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