| 单词 |
metrograph |
| 释义 |
metrograph|ˈmɛtrəʊgrɑːf, -æ-| [f. Gr. µέτρο-ν measure: see -graph.] An apparatus for indicating the speed of a railway-train, and the hour of arrival and departure at each station.
1858in Simmonds Dict. Trade. |

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