linear

a. 线的,直线的,线状的

A linear measure equal to5.50 yards or16.5 feet(5.03 meters); a rod.

杆一种长度量单位，等于5。50码或16。5英尺（5。03米）；一杆

The number of units of useful information contained within a linear dimension, usually expressed in units per inch.

在一单位长度内包含的有用信息单位数。通常用每英寸多少单位表示。