外廓线 meaning in English

lines of owen

A mark used to define a shape or represent a contour
轮廓线，外廓线用于定义一形状或描绘一轮廓的线
Mechanical standardization of semiconductor devices - general rules for the preparation of outline drawings of surface mounted semiconductor device packages - measuring methods for package dimensions of quad flat packs
半导体装置的机械标准化.表面固定半导体装置包装外廓线绘制一般规则.包装尺寸测量方法