y the use of Hellinger-Reissuer variation functional the authors present a hybrid singleelement model of multi-layer thin sheets and have made an analytical computation of the characteristics of built-up laminated sheets based on the use of hybrid single elements in the presence of transverse displacements.
组合层板在横向位移时的特性研究王心丰，方鸿慧（南京航空航天大学）［摘要］用Ｈｅｌｌｉｎｇｅｒ—Ｒｅｉｓｓｎｅｒ变分泛函导出了多层薄板的杂交单元模型。
D/P and D/A is facingdifferent risks and prevention methods.
付款交单与承兑交单面临的风险不同,所以两者的风险防范工作也不同。
D/P and D/A is facingdifferent risks and prevention methods.
付款交单与承兑交单面临的风险不同,所以两者的风险防范工作也不同。
Study on the Law Problem of Electronic Presentation;
信用证电子交单法律问题研究