gas indicator
noun
1A device for indicating the presence of gas, especially (in early use) explosive gas in a coal mine.
2A gas gauge (obsolete rare ).
Origin
Mid 19th century.
| 单词 | gas indicator |
| 释义 | gas indicatornoun 1A device for indicating the presence of gas, especially (in early use) explosive gas in a coal mine. 2A gas gauge (obsolete rare ). Origin |
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