ultrasonic vibrator

Игры ⚽ Поможем написать курсовую

Electric motor — For other kinds of motors, see motor (disambiguation). For a railroad electric engine, see electric locomotive. Various electric motors. A 9 volt PP3 transistor battery is in the center foreground for size comparison. An electric motor converts… … Wikipedia
Wireless — communication is the transfer of information over a distance without the use of electrical conductors or wires . [citeweb|title=Wireless Communication|url=http://www.sintef.no/content/page1 11881.aspx|publisher=sintef.no|accessdate=2008 03 16]… … Wikipedia
ear, human — ▪ anatomy Introduction organ of hearing and equilibrium that detects and analyzes noises by transduction (or the conversion of sound waves into electrochemical impulses) and maintains the sense of balance (equilibrium). The human ear, like … Universalium

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