| 单词 |
hemispherical pyrheliometer |
| 释义 |
hemispherical pyrheliometer hemispherical pyrheliometer[‚he·mē′sfir·ə·kəl ‚pīr‚hē·lē′äm·əd·ər] (engineering) An instrument for measuring the total solar energy from the sun and sky striking a horizontal surface, in which a thermopile measures the temperature difference between white and black portions of a thermally insulated horizontal target within a partially evacuated transparent sphere or hemisphere. |
| 随便看 |
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