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main pipe
archit. 主管
el. 母管
met. 总管
tech. 干管; 总引水管; 总管 (气、水等); 主管 (指供气供水管); 主茎
wind. 主管道
main pipe: 53 phrases in 10 subjects
Automobiles1
Electric machinery4
General1
Hydroelectric power stations1
Metallurgy1
Nautical2
Oil processing plants1
Rail transport4
Shipbuilding2
Technology36