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规格一般是1.27*1.87,, 2mm 2.5mm, 3mm 1.23*2.46 2mm 2.5mm, 3mm 1.27*2.5 3mm 4mm, 5mm 1.66*2.6 3mm 4mm, 5mm 1.54*3.05 3mm 4mm, 5mm 2.05*3.05 3mm 4mm, 5mm, 2.00*2.7 3mm 4mm, 5mm 这些都是常用的
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