| 摘要 |
Abstract A drill assembly for simultaneously drilling a plurality of holes in a substrate, comprising: a support member mounted or mountable to a vehicle; and a plurality of rotatable drills 5 fixed to the support member, wherein the support member is moveable towards the substrate thereby moving the drills in unison and substantially axially to drill the plurality of holes. 3862058_2 (GHMatters) P87941.AU.1 14/01/13 70' 6~t joG 3p |
