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地面高程
avia.	surface level
bridg.constr.	ground elevation; ground level
earth.sc.	terrain elevation
oil	surface elevation
tech.	altitude of ground surface; grade ground level; ground height; grounding elevation; grounding height; grounding level; ground surface elevation; ground table; land level; level of ground
地面高程｛测｝
agric.	ground elevation

地面高程: 33 phrases in 4 subjects

Earth sciences	3
Engineering geology	1
Hydroelectric power stations	1
Technology	28