- rotary rock drill
- 旋转式凿岩机
English-Chinese dictionary of mining (英汉矿业大词典). 2013.
rotary rock drill
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Drill — For other uses, see Drill (disambiguation). Drill scheme A drill or drill motor is a tool fitted with a cutting tool attachment or driving tool attachment, usually a drill bit or driver bit, used for drilling holes in various materials or… … Wikipedia
rotary drill — noun : a rock drill that bores by a rotary action … Useful english dictionary
Drill cuttings — Drill cuttings[1] are the broken bits of solid material removed from a borehole drilled by rotary, percussion, or auger methods. Boreholes drilled in this way include oil or gas wells, water wells, and holes drilled for geotechnical… … Wikipedia
shot drill — noun : a rotary rock drill using chilled steel shot as an abradant compare core drill … Useful english dictionary
Drill string — A drill string on a drilling rig is a column, or string, of drill pipe that transmits drilling fluid (via the mud pumps) and torque (via the kelly drive or top drive) to the drill bit. The term is loosely applied as the assembled collection of… … Wikipedia
Rock core — A rock core is a special type of drill core and is a long tube looking run of rock obtained from the subsurface by drilling using a drilling rig. Usually using a method called mud rotary and cutting with a 2 inch bit and can be a few feet in… … Wikipedia
diamond drill — rotary drill set with black diamonds at its end (used for perforating and boring in rock) … English contemporary dictionary
drilling machinery — equipment used to drill holes in the ground for such activities as prospecting, well sinking (petroleum, natural gas, water, and salt), and scientific explorations. Drilling holes in rock to receive blasting charges is an operation in… … Universalium
Hughes Christensen — Hughes Christensen, a division of Baker Hughes Inc., is a large oil and gas drill bit company. Howard Hughes, Sr. founded the company early in the 20th century. His two cone, rolling cutter rock bit whose patent was issued by the US Patent Office … Wikipedia
pneumatic device — Any of various tools and instruments that generate and use compressed air. Examples include rock drills, pavement breakers, riveters, forging presses, paint sprayers, blast cleaners, and atomizers. Compressed air power is flexible, economical,… … Universalium
Howard R. Hughes, Sr. — Howard Robard Hughes, Sr. (September 9, 1869 ndash; January 14, 1924) was an American entrepreneur, best known as the father of Howard Robard Hughes, Jr., the famous aviation pioneer and film producer. Hughes, Sr. created the fortune that Hughes … Wikipedia
