| 单词 | earth battery |
| 释义 | > as lemmasearth battery earth battery n. †(a) Military a battery (battery n. 5a) formed of earth (obsolete); (b) a battery formed by burying two electrodes of different materials in the earth some distance apart.Sense (a) apparently represents an isolated use. ΚΠ 1841 Chinese Repository Sept. 526 It was a strong and thick wall..with only small low gun-ports, and a defense between one gun-port and another of a thick earth battery of equal height with the wall. 1846 Penny Cycl. Suppl. II. 620/1 In some cases, where a constant current of low intensity is required, this earth battery would become very useful. 1858 Ladies' Repository Apr. 371/2 The only winding-up required by this extraordinary clock is a feed of zinc to the earth-battery when it shall have become oxydized by long use. 1982 U.S. Patent 4,572,582 1 This invention pertains to earth batteries..and more particularly, to a battery in which one electrode is a veined material located in the earth. 2007 U.S. Patent 7,177,819 B2 Abstr. An earth battery may also be included, at least partially contained within the real estate sign and supplying power to the real estate sign. < as lemmas |
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