| |||
vent pipe; main air duct | |||
ventilating duct | |||
air channel; vent | |||
air duct; trunking | |||
air passage duct |
conduta de ar: 20 phrases in 9 subjects |
Agriculture | 2 |
Chemistry | 1 |
Construction | 2 |
Electric motors | 1 |
Energy industry | 1 |
General | 4 |
Mechanic engineering | 4 |
Municipal planning | 1 |
Transport | 4 |