5395| 16
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斷軸 |
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點(diǎn)評(píng)
出了幾千上萬(wàn)臺(tái)的貨,設(shè)計(jì)缺陷早就出現(xiàn)了。脆性斷裂。
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點(diǎn)評(píng)
循環(huán)負(fù)載,脆性斷裂。材料沒(méi)有按要求調(diào)質(zhì)處理,現(xiàn)象比較典型。
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