square rule 是什么意思

	1.	Straightedge rule ( square rule , slide gauge , inside and outside micrometer , steel tape , feeler , dial gauge , depth micrometer , wire gage , radius gage , thread pitch gage ) is a kind of common measuring tool 直尺（角尺、游标卡尺、内径和外径千分尺、钢卷尺、塞尺、千分表、深度千分尺、线规、半径规、螺距规）是一种常用量具。
	2.	On single path condition , the multi - user detection algorithm is derived on the basis of the minimal square rule and the ml rule . a space - time multi - user detection structure and an adaptive method on cdma system are proposed 在单径情况下，基于最小均方误差原则和最大似然原则，提出了一种多用户检测算法和一种空时二维多用户检测器的结构。

square rule是什么意思