TIME

is an ideal process that may be stopped and made to retrace its steps and restore to the systems or surroundings all work and heat previously removed. It is frictionless.

A mercury-in-glass thermometer which records the temperature upon being inverted and retains its reading until being returned to the first position.

A component of a heat pump that reverses the refrigerant's direction of flow, allowing the heat pump to switch from cooling to heating or heating to cooling.

Revised Report

Revised Report.

River and Estoarial Water Service.

A dimensionless flow parameter, ( Jnr/m), in which J is a significant dimension, often a diameter, n is the fluid velocity, r is mass density, and m is dynamic viscosity, all in consistent units.

Abbreviation for radio frequency.

Request For Class.

Reformulated Gasoline (Clean air act).

Request For Invoice.

Request For Approval.

Request for Quote

Restricted Greater Coasting Service.

River and Harbour Service.

A straight line compass course between two points. A line on the earth's surface which intersects all meridians at the same angle.

(See Rina)

Rigid Inflatable Boat

Strips of material temporarily holding parts of a ship in position.