वेंट-होल इसके अंग्रेजी अर्थ का उदाहरण

A vacuum breaker typically contains a plastic disc that is pressed forward by water supply pressure, and covers small vent holes.

Should the supply pressure drop, the disc springs back opening the vent holes (which let in outside air), and preventing backflow of water.

It also has overpressure vent holes allowing high-pressure gases a channel of escape in the rare event of a cartridge case head failure.

Condensation problems can be avoided by incorporating vent holes and a sealed fit.

Often synonymous with 'natural trumpet', the term 'baroque trumpet' is often used to differentiate an instrument which has added vent holes and other modern compromises, from an original or replica natural trumpet which does not.

In general, however, most professional trumpeters regard the modern baroque trumpet, with at least one vent hole, as a necessary compromise to ensure acceptable intonation and secure attack for players of modern trumpets, while still providing an approximation of the original sound.

When opened, the vent hole creates a node, or a position along the vibrating air column, where the pressure variations are at a minimum.

This creates a transposition — in the case of a single thumb vent hole, the entire harmonic series of the trumpet is shifted up by a fourth.

In order to play the out-of-tune 11th and 13th harmonics (notated f2, and a2), for example, the player opens the thumb vent hole and plays the f2 and a2 as the 8th and 10th harmonics of the new series.

His solution to the "grenading" of receivers when shell cases failed catastrophically was to drill a gas vent hole in the left side of the receiver adjacent to the breech.