分析了振动平板夯的运动过程，导出了平板夯的受力公式。
The motion process of vibrating plate ram was analyzed, and the force bearing formulae of plate ram was derived.
认为现广泛采用的振动平板夯数学模型是不符合实际工况的。
The usually used mathematical model of vibrating plates isn't keeping with its working process.
上世纪90年代以后，国外的振动平板夯陆续进入中国市场。
Since 1990s, foreign vibrating plate ram gradually to enter the Chinese market.
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