常見例句雙語例句In this paper a sufficient condition for the local solvability of linear partial differential operators with multiple characteristics is proved.証明了特征重數(shù)可變的線性偏微分算子侷部存在弱解的一個充分條件。In this paper, we attempt to introduce mainly the solvability of several boundary value problems for partial differential equations by using function theoretic methods.本文主要介紹了偏微分方程一些邊值問題的函數(shù)論方法。162.105.205.53 返回 partial solvability