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最佳答案:We agree your suggestion to cut the prices, pls see belowing.And we have 2500pcs
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最佳答案:因冲压车间连续模的落料工序镶件(刀口)磨损严重(刀口崩裂),最终造成电机支承有批锋(如下图所示).x05For pressing workshop of con
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最佳答案:The known sequence { lambda n} is a finite sequence of number,sequence { lambda