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A nuclear device exploded at the bottom of a drilled or mined vertical hole. Some safety tests were set off at the bottom of unstemmed drilled holes, producing a "Roman candle" effect.
출처: www.lanl.gov/history/hbombon/glossary.shtml
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The narrow part of the paddle which the paddler grips.
출처: www.washingtonpost.com/wp-srv/sports/olympics/long...
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A vertical mine working.
출처: www.nbmg.unr.edu/comstockscience/vocab1.shtml
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This carries power from the exhaust fan to the compressor, and runs most of the length of the engine. There may be as many as three concentric shafts, rotating at independent speeds, with as many sets of exhaust fans and compressors. Other services, like a bleed of cool air, may also run down the shaft.
출처: www.absoluteastronomy.com/encyclopedia/j/je/jet_en...
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| shaft |
The shaft is that portion of the rotor that lies on the spin axis of the rotor and is the rotor interface to the stator portions of the magnetic bearings and motor generators. Not all rotor designs require a shaft.
출처: space-power.grc.nasa.gov/ppo/projects/flywheel/def...
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