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最佳答案:板材: FR4板厚: 0.062"±0.008"电镀标准:(2oz Outer/1oz Inner)电镀 S.M.O.B. Cu Sn/Pb 热空气水平焊接掩膜
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最佳答案:Business hotel switchboard serve as transfor as the voice,it's very important fo
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最佳答案:engineering world challenge 工程 世界 挑战不过不合语法···