The temperature to which air must be cooled, at constant pressure and water vapor content, in order for saturation or condensation to occur; the temperature at which the saturation pressure is the same as the existing vapor pressure; also called saturatio ...

Corrosion in which zinc is selectively leached from zinc-containing alloys. Most commonly found in copper-zinc alloys containing less than 83% copper after extended service in water containing dissolved oxygen; the parting of zinc from an alloy (in some b ...

Direction-Finder

Damage Free Car. Boxcars equipped with special bracing material.

Deadfreight. Space booked by shipper or charterer on a vessel but not used

Defense Fuel Support Center

Differential Global Positioning System

Dispatch Half Demurrage on Working Time Saved Both Ends

Thermodynamic change of state of a system in which there is transfer of heat across the boundaries of the system. Compare to adiabatic process.

variable audio-modulated radiosonde developed at the Bureau of Standards and used by the United States weather services.

A stationary element between stages of a multistage centrifugal compressor. It may include guide vanes for directing the flowing medium to the impeller of the succeeding stage. in conjunction with an adjacent diaphragm, it forms the diffuser surrounding t ...

Is a positive displacement reciprocating compressor using a flexible membrane or diaphragm in place of a piston.

A method of removing heat from the flowing medium by circulation of a coolant in passages built into the diaphragm.

A chromate conversion coating produced on magnesium alloys in a boiling solution of sodium dichromate.

In a cathodic protection system, in electrically nonconductive material, such as a coating, plastic sheet or pipe that is placed between an anode and an adjacent cathode to avoid current wastage and to improve current distribution, usually on the cathode.

Diesel.

The difference in electrical pressure (voltage) between any two points in an electrical system or between any point in an electrical system and the earth.

An amount added or deducted from base rate to make a rate to or from some other point or via another route.

An electrolytic cell, the electromotive force of which is due to a difference in air (oxygen) concentration at one electrode as compared with that at another electrode of the same material; an oxygen concentration cell (a cell resulting from a potential d ...