The inverse design method of a dynamic system with linear parameters has been studied. For some specified eigenvalues an......

In order to overcome stress concentration and increase fatigue life of ellipsoidal shells with inner guide structure, th......

在外语教学中,单调无趣的英语作业,不但不会使学生对英语产生兴趣,反而会挫伤学生学习英语的积极性。因此,必须改变传统外语作业布......