| 单词 | aws |
| 释义 | > as lemmasAWS AWS n. British Railways automatic warning system, a system which provides audible indications of upcoming signals. ΚΠ 1961 Electr. Jrnl. July 48/2 A third of the total route mileage of the main trunk routes has now had A.W.S. installed. 1992 S. Hall BR Signalling Handbk. 63/2 AWS equipment is often not provided at large stations where speeds are low, even though the approach lines are equipped. The start of the AWS gap is indicated by a circular white sign showing ‘AWS’ with a red cross. < as lemmas |
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