Gross Domestic Product: The total value of goods and services produced by a nation over a given period, usually 1 year.

Inlet butterfly valve. These are fitted on the inlet of most types of compressor and the valve opens and closes to throttle the air flow. However, the term IBV is usually associated with turbo compressors.

Difference between the instantaneous wind velocity at a point and the mean wind velocity taken over a given time interval. Also called fluctuation velocity.

An annual publication that contains tidal information and information about the position of the sun, moon, planets and stars. This information is used for celestial navigation.

Video Display Terminal. An input and display device which includes a keyboard and a screen and allows a human to communicate with a computer.

An enzyme complex, produced by fungi and bacteria, capable of decomposing cellulose into small fragments, primarily glucose.

Same as freezing point.

International Maritime Lecturers Association

A condition where the particles (dust) becomes embedded in the fabric filter over time and are not removed by the bag cleaning process.

A crack or hole that accidentally admits a gas or lets it escape.

Same as constant-level balloon.

(1) Hardening suitable a = b alloys (most often certain copper or titanium alloys) by solution treating and quenching to develop a martensite-like structure. (2) In ferrous alloys, hardening by austenitizing and then cooling at a rate such that a substant ...

Japanese tapered pipe thread (Female).

A pear-shaped, grooved metal fitting around which an eye splice is made

The pressure of the steam or water in a boiler as measured; usually expressed in pounds per square inch gauge (psig).

The part of the total carbon in steel or cast iron that is present as other than free carbon.

A salt or ester of carbonic acid.

The component of a combustion device that regulates the amount of air entering the combustion chamber.

A phrase used by traders to describe the phenomenon of any stock - even the most rapidly falling one.

A rain gauge or array of rain gauges designed to measure the inclination and direction of falling rain.