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no·vac·u·lite AHD[nō-văkʹyə-līt'] D.J.[nəʊˈvækjəˌlaɪt]K.K.[noˈvækjəˌlaɪt]n.（名词）- A very hard, dense, even-textured, silica-bearing sedimentary rock used in whetstones.均密石英岩：非常坚硬，致密，结构均匀，含硅的沉积岩，用作磨石
- Latin novācula [razor] 拉丁语 novācula [剃刀]
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