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勘探孔
el. test hole
eng.geol. cover hole; exploratory borehole; exploratory hole; investigation hole; prospect hole; scout hole
hydroel.st. exploration hole
tech. borehole for inspection; curtain hole; prospecting hole
勘探
el. prospect hole
勘探 孔
: 35 phrases in 6 subjects
Bridge construction2
Engineering geology8
General1
Hydroelectric power stations3
Oil / petroleum1
Technology20