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cs_firefox wrote: 咬定青山不放松,SK,BS,DCM_5是什么材料哟!
alexsung wrote: 我不清楚,但日本牌号中,SK包含多种工具钢呀,如SK1,SK3,SK5等. 国内外钢号、铝号对照表https://www.icax.org/viewthread. ... %3D1&page=#pid=
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