Betekenis van:
air passage

air passage
Zelfstandig naamwoord
    • a duct that provides ventilation (as in mines)

    Synoniemen

    Hyperoniemen

    Hyponiemen


    Voorbeeldzinnen

    1. ‘stack’ means a structure containing one or more flues providing a passage for waste gases in order to discharge them into the air;
    2. ‘coordination’ means the coordination between air traffic control units of the planned passage of flights across the common boundary, in order to ensure flight safety;
    3. A full length train, running in the open air at v =200 km/h, (or at its maximum operating speed if this is lower), shall not cause the air speed to exceed the value u2σ =11,5 m/s at a height of 1,2 m above the platform and at a distance of 3,0 m from the track centre, during the whole train passage (including the wake).
    4. A full length train running in the open air at 300 km/h or at its maximum operating speed vtr,max if lower than 300 km/h shall not cause an exceedance of the air speed u2σ at the trackside as set out in Table 9, at a height of 0,2 m above the top of rail and at a distance of 3,0 m from the track centre, during the passage of the whole train (including the wake).
    5. A full length train, running in the open air at a reference speed vtr = 200 km/h, (or at its maximum operating speed vtr,max, if this is lower than 200 km/h), shall not cause the air speed to exceed value u2σ = 15,5 m/s at a height of 1,2 m above the platform and at a distance of 3,0 m from the track centre, during the whole train passage (including the wake).
    6. A full length train, running at a given speed (reference case) in the open air shall not cause the maximum peak-to-peak pressure of changes to exceed a value Δp2σ as set out in Table 10 over the range of heights 1,5 m to 3,3 m above the top of rail, and at a distance of 2,5 m from the track centre, during the whole train passage (including the passing of the head, couplings and tail).
    7. A full length train, running at a given speed (reference case) in the open air shall not cause the maximum peak-to-peak pressure of changes to exceed a value Δp2σ as set out in Table 10 over the range of heights 1,5 m to 3,3 m above the top of rail, and at a distance of 2,5 m from the track centre, during the whole train passage (including the passing of the head, couplings and tail). The maximum peak-to-peak pressure changes are tabulated below: