at least five (5) percent of the welds are 100 percent radiographed or ultrasonically examined.
至少5%的焊缝进行100%射线透照或超声检测。
Then digital X-ray film ( RVG) was radiographed in buccolingual and mesiodistal directions and was recorded.
然后拍摄颊舌向和近远中向数字化X线片(RVG),记录RVG影像图片。
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