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back flow
bridg.constr.	倒灌
chem.	开模缩裂
dril.	倒流
earth.sc.	逆流
eng.geol.	反循环洗井
plast.	背压流; 返流
water.res.	回流

back flow : 41 phrases in 16 subjects

Architecture	3
Chemistry	2
Compressors	1
Electronics	2
Finances	1
General	2
Nuclear physics	1
Oil / petroleum	3
Plastics	9
Rail transport	1
Refrigeration	1
Space	1
Surgery	1
Technology	7
Textile industry	4
Wind Energy	2