海词手机词典

In this paper is developed a set of equations of the moment theory for the axisymmetrical problem based on the assumption that the normal displacement can be expressed in a power series when the thick-wall spherical shell is under gas pressure.

播放读音 播放读音

以上内容独家创作,受著作权保护,侵权必究

海词词典,十七年品牌