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1. Oxford Dictionary

   solar constant

   • n.
     the rate at which energy reaches the earth's surface from the sun, usually taken to be 1,388 watts per square metre.

   • noun: solar constant, plural noun: solar constants

2. • 更多解釋

   solar constant

   • IPA[ˈsōlər ˈkänstənt]

   • n.
     the rate at which energy reaches the earth's surface from the sun, usually taken to be ...

   Oxford American Dictionary