Meanwhile, please check the production sample customer provided and the spec of screw hole.
同时，请查看客人提供的上次大货样品，再次核对螺丝孔规格。
2
Where possible screw and dowel hole clearance will be provided in the manifold.
只要可能，在分流式系统上应提供螺丝及合销孔。
3
The successful development of this drilling machine provided reliable safety equipment for drilling shallow engineering hole such as outburst-prevention holes and flank holes in coal mine.