常見例句Domain derivative is a new tool to solve inverse problem, which bases on Frechet derivative to recover the shape of domain using the differentiability of the operator. 首先把區(qū)域?qū)?shù)的概念引入到流體力學方程上來。Some inaccurated definitions and properties in text [1, 2] are introduced and reformed. The definition of infinite space, cover Frechet (v) spaces, net cover spaces and their property are discussed. 摘要指出了文獻[1,2]對鄰域空間等的定義存在的問題并進行了修正，給出了無限空間、蓋鄰空間、網(wǎng)蓋空間的定義，并且討論了它們的一些性質(zhì)。frechet derivative 弗雷謝導(dǎo)數(shù)frechet differentiable function 弗萊謝可微函數(shù)frechet differential 弗雷謝微分frechet space f空間 返回 Frechet