求翻译：当板厚大于10mm且小于等于25mm时，应从每条纵向焊缝中任取2个长度300mm的焊缝进行射线检测，其中一个位置应靠近底板；当板厚大于25mm时，每条焊缝应进行100%射线检测。是什么意思？

When the thickness of less than 10mm and 25mm when each should be taken in any two longitudinal seam weld length of 300mm radiographic testing, which should be near the bottom of a position ; when the thickness is greater than 25mm, each weld should

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When the thickness of slab is bigger than 10mm also is smaller than is equal to 25mm, should from each longitudinal welded joint no matter what takes 2 length 300mm the welded joint to carry on the beam examination, position should approach the ledger wall; When the thickness of slab is bigger than

正在翻译，请等待...

正在翻译，请等待...