单词	celestial sphere
释义	celestial sphere The imaginary sphere of infinite radius within which celestial bodies appear to lie. The earth, and the observer, are visualized as being at the centre of the sphere and the sphere as rotating once every sidereal day (see illustration). The sphere is used to describe the position of celestial bodies with respect to the earth. Celestial sphere
随便看	wave form wave function wave guide wave mechanics wave number wave packet wave power wave theory wave vector wave-particle duality wavefront wavelength wavemeter weak interaction weakly interacting massive particle Web weber Weber, Wilhelm Eduard weight weightlessness Weinberg-Salam model Weston cell wet-and-dry bulb hygrometer Wheatstone bridge Wheatstone, Sir Charles

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