Describes and systematically defines the principal technical characteristics, and allots letter symbols to these characteristics, and indicates how they can be more clearly defined by suffixes corresponding to particulate cases. Lists also an analysis of

Describes and systematically defines the principal technical characteristics, and allots letter symbols to these characteristics, and indicates how they can be more clearly defined by suffixes corresponding to particulate cases. Lists also an analysis of parameter dimensions. Gives examples for the use of symbols with suffix, and includes definition of terms without symbols.