| drilling |
The act of boring a hole through which oil or gas may be produced if encountered in commercial quantities.
출처: www.maverickenergy.com/lexicon2.htm
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| drilling |
Piercing a hole in rock. In exploration, drilling allows for samples of the rock to be taken. In mining, it is used to insert explosives for blasting.
출처: www.nrcan.gc.ca/mms/scho-ecol/glos_e.htm
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| drilling |
The operation of producing a hole by removing material from a solid mass using a cutting tool called a drill.
출처: hannawestside.anderson5.net/academyofengineering/R...
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| drilling |
A three-barrel gun, typically with two identical side-by-side shotgun barrels mounted above one rifle barrel. Built primarily in Germany and Austria.
출처: www.hallowellco.com/abbrevia.htm
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| drilling |
German for "triple", which is their designation for a three-barrel gun.
출처: www.gunshop.com/bbp6.htm
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