求翻译：L型钢件有A、B两种规格，对应拼焊尺寸如下表，角钢板预留1mm铣边加工余量，按拼接尺寸设计下料排版图，根据排版图进行CNC下料是什么意思？

l steel parts a, b two specifications and the following table, corresponding to the tailor welded blank size, angle plate reserved 1mm milling edge allowance, the size of the design stitching material layout diagram, layout diagram cnc cutting

steel parts are L A B , two sizes, the corresponding spell welding Table dimensions are as follows, the corner reserved for 1 mm steel plate trimming processing volume, press the stitched size design, in accordance with the mine map for the territory under CNC the

The L steel stock has A, the B two kind of specifications, the correspondence spells welds the size following table, the angle steel plate reserves nearby the 1mm mill to process the remainder, according to the splicing size design yummy treats typesetting chart, carries on the CNC yummy treats acco

L-shaped steel parts a, b, two specifications, corresponding welding following dimensions table, angle plates reserved 1mm milling machining allowance, according to the stitch size blanking line map, according to the layout diagram for CNC cutting

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