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| aperture; bay; eye; gap; gape; hole; leak; loophole; manhole; mouth; nozzle; opening; orifice; outlet; passage; perforation; rift; slit; vent; vent-hole | |||
| foramen | |||
| bellmouth; drilling; hatch | |||
| cavity; crevice; door; gate; groove; loop; mesh (na situ); shaft | |||
| aperture (za vrata i sl.); mesh; mouth (tunela); orfice; pit; span | |||
| embouchure | |||
| port | |||
| fistula | |||
| porthole | |||
| conduit; hiatus | |||
| slot | |||
| spud | |||
| cleft; cutout; gash; inlet; lip; louver; pit-head; port (za paru, vazduh); rent; throat | |||
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| foam-filled honeycomb | |||
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| perforate (u zaštitnim - obložnim cijevima) | |||
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| bottomless hole (gen) | |||
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| mouth-piece | |||
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