The ratio of the volume of an engines cylinder at the beginning of the compression to its volume at the end of the compression process. For example, a cylinder with a volume of 20 cubic inches before [..]

The ratio of a files uncompressed size over its compressed size. A file compressed ten-fold over its uncompressed size would be described as having a ten-to-one compression, expressed as 10:1. Some fo [..]

For combustion engines, the compression ratio is the ratio of volume of the combustion chamber at its largest capacity to the volume at its smallest capacity.

In an internal combustion engine, the ratio of the volume of combustion space at bottom dead center to that at top dead center.

In signal compression, the ratio of the dynamic range of compressor input signals to the dynamic range of the compressor output signals. Note: The compression ratio is usually expressed in dB. For example, a 40-dB input range compressed to a 30-dB output range would be equivalent to a 10-dB compression. 2. In digital facsimile, the ratio of the tot [..]

The ratio of the size of a compressed data file, which has been more efficiently encoded, to that of the original uncompressed file. For example, the ratio for a 10MB file compressed to 2MB would be 1 [..]

The ratio of (i) the volume of a vehicles engine cylinder with its piston at bottom dead center to (ii) the volume of the same cylinder with its piston at top dead center.

A value that indicates by what factor an image file has been reduced after compression. The higher the ratio, the greater the compression.

The ratio determined by dividing the discharge pressure by the suction pressure in PSI (pounds per square inch).

In single-screw extruders the channel depth in the solids-conveying zone under the hopper is much larger than in the metering (pumping) zone. The depth ratio, usually in the range of 2.0–4.0, [..]

The ratio between the combined volume of a cylinder and a combustion chamber when the piston is at the bottom of its stroke, and the volume when the piston is at the top of its stroke. The higher the [..]

The ratio determined by dividing the discharge pressure, in PSI (Pa), by the suction pressure in PSI (Pa).

The ratio of the volume within an engine cylinder when the piston is at the bottom of its stroke, compared to the volume in the cylinder when the piston is at the top of its stroke. The higher the ratio, the more compression during combustion and the more powerful the engine. Eg- 8:3:1 Comprehensive Coverage

The ratio determined by dividing the discharge pressure, in PSI (Pa), by the suction pressure in PSI (Pa).

Volume of air above the piston at bottom dead center compared with volume of air at top dead center.

the ratio determined by dividing the discharge pressure, in psi, by the suction pressure in psi.

The ratio of the volume at the beginning of a compression stroke to the volume at the end.

The ratio of the volume within an engine cylinder when the piston is at the bottom of its stroke, compared to the volume in the cylinder when the piston is at the top of its stroke. The higher the rat [..]

The extent to which the combustible gases are compressed within the cylinder: the ratio of cylinder and chamber volume with the piston at bottom dead center to the volume of the combustion chamber at [..]

The ratio of the volume of the combustion chamber with the piston at top dead center (TDC) to the volume of the combustion chamber and the cylinder with the piston at bottom dead center (BDC). Higher [..]

In an engine, the ratio of the cylinder volume at BDC to cylinder volume at TDC.

The ratio determined by dividing the discharge pressure by the suction pressure in PSI (pounds per square inch).

Discharge pressure divided by suction pressure.

A value that indicates by what factor an image file has been reduced after compression. The higher the ratio, the greater the compression.

The ratio of the volume of combustion space at the bottom dead centre to that at top dead centre, in an internal combustion engine.

The ratio of the absolute discharge pressure to the absolute inlet pressure.

The ratio determined by dividing the discharge pressure by the suction pressure in PSI (pounds per square inch).

The ratio determined by dividing the discharge pressure by the suction pressure in PSI (pounds per square inch).

The ratio of the discharge pressure to the inlet pressure. Constant Speed Control

The ratio determined by dividing the discharge pressure, in PSI (Pa), by the suction pressure in PSI (Pa).

Expresses the comparison between two absolute pressures: discharge pressure and inlet pressure.

The relationship of absolute outlet pressure at a compressor to absolute inlet pressure.

in an internal combustion engine, the ratio of the volume of combustion space at bottom dead center to that at top dead center.

How many dB the input signal has to rise above the threshold for every one dB more output of a compressor or limiter.

Ratio of the volume of the clearance space to the total volume of the cylinder. In refrigeration it is also used as the ratio of the absolute low-side pressure to the absolute high-side pressure.