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The free vibration of a free thick rectangular plate is analyzed.
对弹性地基上四边自由矩形厚板的自由振动进行了分析。
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This consists of two rectangular support blocks mounted on a back plate.
这种格架由两块安装在底板上是矩形支撑块组成。
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This consists of two rectangular support blocks mounted on a back plate.
这种格架由两块安装在底板上是矩形支撑块组成。
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