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砂孔 shākǒng
automat. sand mark
oil sand hole
space dirthole
tech. pit
砂〔缩,纹〕孔
gen. pit
砂孔: 72 phrases in 13 subjects
Architecture3
Automobiles1
Compressors3
Drilling4
Electronics2
Engineering geology3
General3
Geophysics6
Latin1
Metallurgy3
Nautical1
Oil / petroleum9
Technology33