vertical opening


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vertical opening

An opening through a floor, roof, or other horizontal surface.
References in periodicals archive ?
Some smoke visualization studies were also performed, in which Li noted three different flow regimes: uni-directional flow in both openings, bi-directional flow in the vertical opening with flow out of the horizontal opening, and bi-directional flow in the horizontal opening with flow into the vertical opening.
The vertical opening also means that barrel drool falls on the floor instead of into the clamp.
The noise margin is denoted by the vertical opening of the eye, while sensitivity to timing errors (variations in the system sampling) is shown by the width or horizontal opening of the eye.

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