Depressed trough, manhole edges and other places where the roller can not reach shall be compacted with frog rammer.

在压路机不能达到的路槽和检查井边缘，采用蛙式打夯机夯实。

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In this paper, the nonlinear dynamics of Selfpropelled machines with rocked impact, taking Frog rammer which was first devised in our country as an example, is studied.

本文以我国首创的蛙式打夯机为例，对自行式摆动冲击机构的非线性动力学进行了研究。

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The backfill shall be transported with machine and rammed with a frog rammer or a vertical rammer, or rammed with a roller in case of allowable situation.

回填料采用机械运输，夯实采用蛙式夯机或立式夯机进行夯压，允许的情况下采用碾压机进行压实。

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