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发布时间：2023-11-06 22:32:43
+plus加号；正号-minus减号；负号±plusorminus正负号×ismultipliedby乘号÷isdividedby除号＝isequalto等于号≠isnotequalto不等于号≡isequivalentto全等于号
≌isequaltoorapproximatelyequalto等于或约等于号
≈isapproximatelyequalto约等于号＜islessthan小于号＞isgreaterthan大于号≮isnotlessthan不小于号≯isnotmorethan不大于号
≤islessthanorequalto小于或等于号≥ismorethanorequalto大于或等于号%percent百分之…‰permill千分之…∞infinity无限大号∝variesas与…成比例√(squareroot平方根
∵since;because因为∴hence所以
∷equals,as(proportion等于，成比例∠angle角≲semicircle半圆≰circle圆
○circumference圆周πpi圆周率△triangle三角形
≱perpendicularto垂直于∪unionof并，合集∩intersectionof交，通集∫theintegralof…的积分∑
