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blade – n. a flat long turning part that is used on some machines to push air or water
generator – n. a machine that produces electricity
vibration – n. a continuous slight shaking movement : a series of small, fast movements back and forth or from side to side
maintenance – n. the act of keeping property or equipment in good condition by making repairs, correcting problems, etc.
mast – n. a tall pole that supports or holds something
oscillate – v. to move in one direction and then back again many times
prototype – n. an original or first model of something from which other forms are copied or developed
