“bore hole”造句，怎麼用bore hole造句

The engineering practice and the numerical simulation have been conducted on the millisecond blasting for ditching deep bore hole.

I'm on duty as from the Spring Day.

Installing bolts allowed to use gas cutting bore hole and never more than two gaskets pad not sexual bolts, exposed screw bolt length of not less than2-3 deduction.

large beetle whose larvae bore holes in pine trees.

The invention of pneumatic drill. This device compressed air to bore holes in the rock.

Constructional technique and quality assurance of big bore hole digging and pouring with expansion pile head

Completed pile working method of bore hole filling pile in the rock area with under-earth mined out layer

This tech has feature of measuring full data, saving operation time and losing cost which avoids bore hole disturbance and killing fluid influence.

Gas drainage in seam with large auto variable diameter bore holes

The deviational survey unit measures the parameters of the apex angle and the azimuthal angle of the bore hole;

This paper introduces a technique of erecting framework and rig at the upper part of the caisson, making underwater boring and oriented explosion by layers within the bore hole.

Pressure releasing and gas drainage with long bore hole in roof overburden of fully mechanized caving face

Stamp-tax, press the flower, engraving and bore hole the series ceiling.