| 单词 | pyrheliometric | 
| 释义 | > as lemmaspyrˌhelioˈmetric   pyrˌhelioˈmetric adj.				 [compare French pyrhéliométrique (1872)]			 of, relating to, or involving a pyrheliometer. ΚΠ 1874    Nature 23 July 238/2  				Remarks on the pyrheliometric observations of Pouillet. 1935    Geogr. Jrnl. 86 282  				A discussion of the pyrheliometric measurements at Nice and at Thorene. 1978    Nature 19 Oct. 630/1  				The ratio of the pyrheliometric measurements at air mass 2.5 to that at 2.0 provides a relative measure of atmospheric transmission which is independent of the pyrheliometer calibration. < as lemmas | 
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