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地质年代表 dìzhì niándài biǎo
agric.	geologic chronology; the geologic time scale; geologic calendar
bridg.constr.	geologic time table
desert.	chronologic scale
dril.	stratigraphic scale
geol.	geochronologic scale
oil	chronological scale; geochronologic chart
space	geologic time scale
tech.	chronological series; chronological table; geological time scale; stratigraphical scale

地质年代表: 19 phrases in 4 subjects

Drilling	2
Geology	1
Oil / petroleum	2
Technology	14