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seal mineral material
释义
seal mineral material
Encyclopedia
工学
矿物材料
释
seal mineral material
密封矿物材料
为防止介质泄漏或介质从外部浸入而在固定部分或运动部分所使用的矿物材料。
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bookbinding and layout
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Book Design Art Working Committee under the Publishers Association of China
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book distribution management
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Booker Taliaferro Washington
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BookExpo America
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book history
Book Industry Study Group
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更新时间:2025/7/5 20:14:44