reference pressureの例文

• The reference pressure is set by International agreement to be 20 micropascals for airborne sound.
• The reference pressure, in Kollsman window, " on the face of the aircraft altimeter.
• Where p _ 0 is an integration constant that represents some reference pressure at z = 0.
• On a sensitive altimeter, the sea-level reference pressure can be adjusted with a setting knob.
• There are two types of gauge reference pressure : vented gauge ( vg ) and sealed gauge ( sg ).
• It has a source level of 150 to 165 decibels at a reference pressure of one micropascal at one metre.
• The effective leakage area ( ELA ) at a reference pressure is also a common metric used to characterize envelope airtightness.
• Thus a vented gauge reference pressure sensor should always read zero pressure when the process pressure connection is held open to the air.
• On the conventional side, the control valve set a reference pressure in a volume, which set brake cylinder pressure via a relay valve.
• No reference temperature is applicable to the Boiling and Melting points, but the reference pressure is probably 1 atmosphere ( 101.325 kPa ).
• It represents the area of a perfect orifice that would produce the same airflow rate as that passing through the building envelope at the reference pressure.
• Tensiometers operate by allowing the pore water to come into equilibrium with a reference pressure indicator through a permeable ceramic cup placed in contact with the soil.
• Each sweep has a duration of 0.2 seconds and an average source level of about 147 decibels at a reference pressure of one micropascal at one metre.
• They are repeated about every 1.5 to 3 seconds and have a source level of 140 decibels at a reference pressure of one micropascal at one metre.
• If using a water manometer to measure millimeters of water the reference pressure ( P _ { 0 } ) may be entered as 10333 mm H _ 20.
• These strange calls were recorded from October to May  peaking in March  and had a source level of about 150 decibels at a reference pressure of one micropascal at one metre.
• Level or sound pressure level in both these standard texts simply refer to a measurement in the sound field and are not indications of a specific reference pressure upon which the decibel is based.
• \theta _ e is the temperature a parcel of air would reach if all the water vapor in the parcel were to condense, releasing its latent heat, and the parcel was brought adiabatically to a standard reference pressure, usually 1000 mbar ) which is roughly equal to atmospheric pressure at sea level.
• In air the reference pressure is 20 ?Pa rather than 1 ?Pa . For the same numerical value of SPL, the intensity of a plane wave ( power per unit area, proportional to mean square sound pressure divided by acoustic impedance ) in air is about 20 2 ?600 = 1 440 000 times higher than in water.
• So cool air lying on top of warm air can be stable after all ( as long as the temperature decrease with height is less than the adiabatic lapse rate ); the dynamically important quantity is not the temperature, but the potential temperature & mdash; the temperature the air would have if it were brought adiabatically to a reference pressure.