英语词汇“marker bed”的意思、释义、用法解释及翻译-双龙斋书画网

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词汇	marker bed
释义	Definition of marker bed in English: marker bed noun Geology 1A layer of sedimentary rock possessing distinctive characteristics (especially fossils) which enable it to be recognized over a large area. 2A sedimentary stratum that accounts for a characteristic seismic refraction time–distance curve. Origin 1950s; earliest use found in Nature: a weekly journal of science. Definition of marker bed in US English: marker bed noun Geology 1A layer of sedimentary rock possessing distinctive characteristics (especially fossils) which enable it to be recognized over a large area. 2A sedimentary stratum that accounts for a characteristic seismic refraction time–distance curve. Origin 1950s; earliest use found in Nature: a weekly journal of science.
随便看	be very attentive to be very fond of be very good be very hot be very keen be very keen on be very partial to be very rich be very unpleasant be vested in be vested in be vested with be vested with be viable be victorious be victorious in be victorious over bevies be vigilant be vigorous be vile bevin Bevin boy be vindicated Bevin, Ernest

　

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