单词	approximation theory
释义	approximation theory 逼近论
随便看	unsymmetry untouchable number U-numbers (= Ulam sequence) unusual number unusual quantifiers unweighted unweighted mean unwind unwinding un-【前缀】 up and down method (= up-and-down method) up cross upcrossing inequality UPC (= universal product code) updated updating updating formula updating function up-ladder up-ladder operator upper upper-and-lower-functions method upper approximate limit upper approximate value upper asymptotic density

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