public DerivedMeasure(MeasureTerms terms, string name = null, string symbol = null)
{
terms = terms ?? new MeasureTerms();
this.terms = terms;
this.name = name ?? terms.Formula();
this.symbol = symbol ?? name;
definition = name;
}
public override string Formula(bool isLong = false)
{
return(terms.Formula(isLong));
}