| 单词 | dwarf signal |
| 释义 | > as lemmasdwarf signal dwarf signal n. Railways a low home signal (see home signal n. (b) at home n.1 and adj. Compounds 2). ΚΠ 1870 Brit. Patent 2586 (1871) 3 The dwarf signal in connection with each pair of switches or points is by preference made in the form of an arrow. 1922 Times of India 4 Aug. (Engin. Suppl.) 3/1 In order to minimise the number of red lights which a driver would see at night in congested areas, the ‘Stop’ indication of the Dwarf Signal is purple instead of red. 2016 Trains Mag. Mar. 58 When the dwarf signal popped into view, a yellow restricting signal greeted us, which doesn't happen often. < as lemmas |
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