Coussin d’air
Equipment and Tools
A mechanical device that uses trapped air to
prevent motion. Air is trapped in a plastic
toroidal envelope fixed on an aluminum plate
and placed between the load and the ground. The
compressed air in the envelope is forced to the
bottom; when the pressure is great enough, the
air escapes to the ground which allows of the
cushion and the load to float on the air. Syn. with
AIR SKATES; CUSHION
AIR ENTRAINMENT METER
Aéromètre
Equipment for Measure and Control
Syn. with AEROMETER
AIR GUARD
Garde d’air
Construction
The clearence, usually at least 20 cm, between
the top of a vehicle and the intrados of the tunnel
or bridge. See Figure 10
AIR LEVEL
Niveau à bulle d’air
Equipment for Measure and Control
Syn. with SPIRIT LEVEL
0 komentar:
Posting Komentar