打夯机 power rammer 利用冲击和冲击振动作用分层夯实回填土的压实机械。 分火力夯、蛙式夯和快速冲击夯等。
... 自行式振动压路机 auto vibrating roller 打夯机 tamping machine 沥青摊铺机 asphalt spreader ...
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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。
Depressed trough, manhole edges and other places where the roller can not reach shall be compacted with frog rammer.
道岔应采用与轨道相同的方法，由合适的衬砌、平整和打夯机来处理。
Turnouts shall be treated in the same manner as the track by an appropriate lining levelling and tamping machine.
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。
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.
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