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lushao銅蟲 (初入文壇)
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[交流]
【求助】布氏硬度測試
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已知樣品是個銅墊圈,布氏硬度標注值HB5/125是30. 已解決 [ Last edited by lushao on 2010-9-10 at 11:41 ] |
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