A REFINED DIFFERENTIAL EQUATION OF DISPLACEMENT OF FOURTH ORDER FOR THE AXIAL SYMMETRICAL BENDING PROBLEM OF A CONICAL SHELL AND ITS SOLUTION IN BESSEL FUNCTION是什麼意思_A REFINED DIFFERENTIAL EQUATION OF DISPLACEMENT OF FOURTH ORDER FOR THE AXIAL SYMMETRICAL BENDING PROBLEM OF A CONICAL SHELL AND ITS SOLUTION IN BESSEL FUNCTION在線翻譯_英語_讀音_用法_例句