secant
adj. 割的;切的;交叉的; n. 割线;正割
adj.切的,割的,交叉的n.割线,正切
cleverly conscientiously doronicum gaea hyperesthesia mwt semidiameter下载迅蛙App
lolian2#163.com
adj. 割的;切的;交叉的; n. 割线;正割
adj.切的,割的,交叉的n.割线,正切
cleverly conscientiously doronicum gaea hyperesthesia mwt semidiameter