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[今日口语] She is in a quandary about which university to choose.

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mineral wool

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矿棉,矿物棉,矿渣绒
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  1. Wool is attacked by hot sulphuric acid and decomposes completely. It is generally resistant to most other mineral acids of all strengths.
    羊毛会受到浓硫酸的侵袭并完全分解。羊毛一般能抵御多数其它不同浓度的无机酸。收藏

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