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单词
coal bed
释义
Coal bed
(Geol.)
a layer or stratum of mineral coal.
See also: Coal
coal bed
coal bed
[
′kōl ‚bed
]
(geology)
A seam or stratum of coal parallel to the rock stratification. Also known as coal rake; coal seam.
Thesaurus
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coal
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time off
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time off in lieu
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time-of-flight isochronous
time-of-flight mass analyser
time-of-flight mass spectrometer
time of flight mass spectrometry
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time off program
time off request
time offset table
time off target
time off with pay
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更新时间：2026/1/12 12:09:00