单词	equivalence class
释义	equivalence class noun : a set for which an equivalence relation holds between every pair of elements Word History First Known Use 1952, in the meaning defined above
随便看	pinnatisect pinned pinned (down) pinned (on) pinned down pinned on pinner pinners pinnets pinni- Pinnidae pinnies Pinnigrada pinnigrade pinning pinning (down) pinning (on) pinning block pinning down pinning end pinning forceps pinning on pinnings pinniped pinnipedes

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