【建筑】夯实工具

这鬼文没有看明白，他旋转的什么（怀疑应该是旋主轴）太多名词不认识，要测什么，图6，图7读出的差值说明什么？

ramming

ramming

jolt-ramming machine (jarring machine)

RAMMING of ballast under railway sleepers

ramming finisher

ramming head

compacting foundation soil by RAMMING

ramming and moulding machine