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blow line
oil 扫线用高压气管线
tech. 流道管; 风道; 放喷管 (路); 喷放管道
blow line
: 20 phrases in 10 subjects
Chemistry1
Electric machinery1
Metallurgy2
Nautical1
Oil / petroleum4
Plastics3
Polymers1
Space1
Technology4
Wind Energy2