单词	electromagnetic spectrum
释义	electromagnetic spectrum The range of wavelengths over which electromagnetic radiation extends. The longest waves (105-10-3 metres) are radio waves, the next longest (10-3-10-6 m) are infrared waves, then comes the narrow band (4-7 × 10-7 m) of visible light, followed by ultraviolet waves (10-7-10-9 m), X-rays (10-9-10-11 m), and gamma rays (10-11-10-14 m).
随便看	centigrade scale central processing unit centre of curvature centre of gravity centre of mass centrifugal force centrifugal pump centrifuge centripetal force centroid Cerenkov counter Cerenkov radiation Cerenkov, Pavel Alekseyevich cermet CERN cetane number Chadwick, Sir James chain reaction Chandrasekhar limit change of phase channel chaos characteristic charge charge carrier

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