单词	air gap
释义	Air gap 1. (Physics) An air-filled gap in a magnetic or electric circuit; specif., in a dynamo or motor, the space between the field-magnet poles and the armature; clearance. air gap air gap [′er ‚gap] (electronics) A gap or an equivalent filler of nonmagnetic material across the core of a choke, transformer, or other magnetic device. A spark gap consisting of two electrodes separated by air. The space between the stator and rotor in a motor or generator. (engineering) The distance between two components or parts. In plastic extrusion coating, the distance from the opening of the extrusion die to the nip formed by the pressure and chill rolls. The unobstructed vertical distance between the lowest opening of a faucet (or the like) which supplies a plumbing fixture (such as a tank or washbowl) and the level at which the fixture will overflow. (geology) wind gap (petroleum engineering) In an offshore drilling operation, the distance from the normal sea surface level to the bottom of the base of the drilling platform. air gap air gap, 2 air gap, 1 1. The unobstructed vertical distance between the lowest opening of a faucet (or the like) which supplies a plumbing fixture (such as tank or wash bowl) and the level at which the fixture will overflow. 2. In a drainage system, the unobstructed vertical distance between the outlet of a waste pipe and the flood-level rim of the receptacle into which it discharges. 3. A gap in an electric or magnetic circuit; usually acts as a high-resistance path in the circuit.
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