10348| 17
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有哪些金屬材料彈性比較好? |
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點(diǎn)評(píng)
說(shuō)的很有道理
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點(diǎn)評(píng)
看你要干什么,去問(wèn)問(wèn)走的熟的金屬零售商,他會(huì)給你推薦。
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點(diǎn)評(píng)
剛度和彈性比較好不矛盾的嘛?
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