资料来源 : pyDict

太阳热力计,日温计

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Pyrheliometer \Pyr*he`li*om"e*ter\, n. [Gr. ? fire + ? sun +
   -meter.] (Physics)
   An instrument for measuring the direct heating effect of the
   sun's rays.