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 longitudinal seam weld two 300mm radiographic testing, which should be near the bottom of a position ; when the thickness is greater than 25mm, each weld should be

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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 300mm the welded joints to carry on the beam examination, position should approach the ledger wall; When the thickness of slab is bigger than 25mm,

正在翻译，请等待...

正在翻译，请等待...