| 释义 |
线规xiànguī测量金属线的直径用的工具,是一块圆形或方形的钢板,边缘有许多大小不同的开口,并标有线号或尺寸。金属线通过的开口所标的号数或尺寸就是该线的号数或直径。{wire gauge; round or square steel sheet for measuring the diameter of wire, thickness of sheet metal, etc., usu. consisting of a disk with notches of graduated sizes along its edge. The size marked on one of the notches through which a metal wire passes is its exact size or diameter.} |