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— Dielectric thawing using frequencies of the order of thousands of megahertz (usually 2450 MHz or 915 MHz in accordance with the International Telecommunication Union).

— Pressure below 10-5 N/m2 (75.10-9 mm Hg).

— The condition when the quantity of refrigerant in a refrigerating circuit is below the minimum to ensure the correct feed to the evaporator.

— In a refrigerated vehicle or a cold room, the circulation of cold air beneath the load, through a rack floor.

— A refrigerating unit which is attached under the chassis of a vehicle to be cooled.

— A compressor in which the suction gas passes through the piston.

— An encased assembly whereby the temperature of air passing through it is reduced.

— An assembly including a heating element and a fan for mechanical displacement of the air.

— The practice of starting a compressor after equalizing high side and low side pressures.

— An arrangement to connect suction and discharge of a compressor or of certain cylinders of a compressor, to reduce the starting load on the motor or to effect capacity reduction.