series of protection members applied permanently to the interior of a refrigerated compartment to provide airspace between the stowed cargo and the sides of the compartment 

strips of wood or other suitable material used in stowing cargo to provide airspaces between pieces, packages, or between them and walls and floors 

ideal reversible thermodynamic cycle comprising two isothermal processes and two adiabatic processes. The cycle represents the maximum theoretical conversion of heat energy into mechanical energy. Compare reverse Carnot cycle. See second law of thermodynamics.

1. in a periodic carrier, the reciprocal of its period. Note: The frequency of a periodic pulse carrier often is called the pulse repetition frequency in a signal transmis­sion system.

2. (modulated amplifie­r) the frequency that is used to modulate the input signal for amplification.

1. electronic vacuum tube containing a screen on which information may be shown by modulated beam of electrons (a beam of cathode rays).

2. electronic storage tube.

3. oscilloscope tube.

technique to minimize corrosion of a metal surface by coating the cathodic surface of an electrochemical cell.

positively charged atom or group of atoms, or a radical that moves to the negative pole (cath­ode) during electroly­sis. Compare anion.

1. formation of cavities on a sur­face of a solid by liquid moving over it with velocity high enough to induce erosion of the surface when the cavity collapses.

2. forma­tion by mechani­cal forces of vapor in liquids; specifical­ly, the formation of vapor cavities in the interior or on the solid boundaries of liquids in motion, where the pressure is reduced to a critical value without a change in ambient temperature.

cooling degree-day