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砾石层
desert.
gravel layer
;
gravel stratum
dril.
gravel
eng.geol.
pebble bed
;
pebble gravel
oil
gravel bed
tech.
gravel course
砾石
垫
层
tech.
gravel bed
砾石 层
:
77 phrases
in 15 subjects
Agriculture
1
Architecture
1
Bridge construction
3
Desert science
4
Drilling
1
Earth sciences
1
Ecology
1
Electronics
1
Engineering geology
10
General
2
Hydroelectric power stations
2
Mining
2
Oil / petroleum
19
Technology
28
Wind Energy
1
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