在铺路前，推土机将把路铲平。

The bulldozer will level the road before paving.

youdao

功能：未知的，但它是铺路低直升机西科斯基进展，但这种事无法猜测。

Function: Unkown, but it is the Pave Low helicopter made by Sikorsky, but what it does is up to guessing.

youdao

冲击压实机是一种高冲击能量的压实机械，通过破裂稳固混凝土路面，使旧路面形成嵌锁型结构，成为新铺路面的垫层或底基层。

Impact compactor is a compaction machinery with high impact energy, which cracks the old cement concrete pavement to form a interlocking structure and be the cushion or sub-base of the new pavement.

youdao