英语词汇“cannon-clock”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

> as lemmas

cannon-clock

† cannon-clock n. Obsolete a cannon with a lens fixed over the vent in such a way as to focus the sun's rays when at their highest and ignite the priming.

ΚΠ

1832 Leicester Chron. 6 Oct. Cannon Clock... A burning-glass is fixed over the vent of a cannon, so that the sun's rays, at the moment of its passing the meridian, are concentrated by the glass, on the priming, and the piece is fired.

1897 Chums 3 Mar. 446/1 This very alarming timepiece was outdone by a cannon-clock in Paris in 1832.

1918 E. S. Farrow Dict. Mil. Terms (rev. ed.) 102 Cannon-clock, a cannon with a burning glass over the vent, so as to fire the priming when the sun reaches the meridian.

extracted from cannonn.¹

as lemmas

单词	cannon-clock
释义	> as lemmas cannon-clock † cannon-clock n. Obsolete a cannon with a lens fixed over the vent in such a way as to focus the sun's rays when at their highest and ignite the priming. ΚΠ 1832 Leicester Chron. 6 Oct. Cannon Clock... A burning-glass is fixed over the vent of a cannon, so that the sun's rays, at the moment of its passing the meridian, are concentrated by the glass, on the priming, and the piece is fired. 1897 Chums 3 Mar. 446/1 This very alarming timepiece was outdone by a cannon-clock in Paris in 1832. 1918 E. S. Farrow Dict. Mil. Terms (rev. ed.) 102 Cannon-clock, a cannon with a burning glass over the vent, so as to fire the priming when the sun reaches the meridian. extracted from cannonn.¹ < as lemmas
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