| 单词 | sun-signalling |
| 释义 | > as lemmassun-signalling sun-signalling n. now historical signalling by means of flashes of reflected sunlight; = heliography n. 4. ΘΚΠ society > communication > indication > signalling > visual signalling > heliography > [noun] sun telegraphy1875 sun-signalling1876 heliography1887 1876 Jrnl. Royal United Service Inst. Jan. 544 A passing cloud is quite enough to interrupt the most important message... This is an evil of such great magnitude, that it at once places sun-signalling in the second class. 1902 Navy & Army Illustr. 22 Feb. 572/2 Our illustration shows the comrades in arms of both parts of the Empire learning the art of sun-signalling together. 1993 W. M. Keynes Sir F. Galton i. 2 Galton had a strong mechanical bent, producing over the years a long succession of mechanical inventions, such as..an instrument for sun-signalling. < as lemmas |
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