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单词	exact differential
释义	exact differential noun : a differential expression of the form X1dx1 + … + Xndxn where the X's are the partial derivatives of a function f(x1,  …  , xn) with respect to x1,  …  , xn respectively Word History First Known Use 1825, in the meaning defined above
随便看	Pithiviers pithless pithlessly pithoi pithole pithos pithoses piths pithworm pithy pithy gall pitiable pitiableness pitiablenesses pitiabler pitiablest pitiablier pitiabliest pitiably pitied pitier pitiers pities pitiful pitifuller

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。