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井底 jǐngdǐ
dril. bottom hole; borehole bottom; bottom; hole toe; shaftbottom; toe of a hole
earth.sc. down-the-hole
eng.geol. shaft bottom
oil bore-hole bottom; down hole
tech. bottom of shaft; bottom of the hole; shoot the well; toe of hole
井底
: 630 phrases in 17 subjects
Architecture2
Aviation1
Bridge construction1
Drilling193
Earth sciences12
Electronics1
Engineering geology12
Explosives and Explosive Ordnance Disposal10
General9
Geophysics9
Management1
Mining58
Nautical4
Navigation7
Oil / petroleum208
Shipbuilding1
Technology101