powerbox
noun
1An electrical device such as a transformer or dynamo enclosed in a box-like housing.
2 British a signal box in which all functions are powered by electricity.
Origin
Late 19th century.
| 单词 | powerbox |
| 释义 | powerboxnoun 1An electrical device such as a transformer or dynamo enclosed in a box-like housing. 2 British a signal box in which all functions are powered by electricity. Origin |
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