他当时的设计草图表明，这个信用卡大小的播放器带有矩形显示屏和中心控制键，转动这个键可以选择音轨，而这些都与现在的iPod极其相似。
His sketches at the time showed a credit-card-sized player with a rectangular screen and a central menu button to scroll through a selection of music tracks - very similar to the iPod.
本文是作者在上一篇文章的基础上进一步讨论了矩形正交异性板在虑及剪切变形和剖面转动惯量影响下的强迫振动。
On the basis of the author's former paper, in this paper the forced vibrations of rectangular orthotropic plates taking into account the shear deformation and rotatory inertia are discussed.
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