qiē diǎn
意思解释：（Point of tangency）曲线转变为直反线的点或改变其曲率的点。
直线与圆、直线与球、圆与圆、平面与球或球与球相切的交点。1873年丁韪良等《中西闻见录》第15号:“甲乙丙丁平圆内，任作甲心、乙心、丙心三半径切圆界于甲于乙于丙，法自甲乙丙各切点作切线引长之交于戊。”1931年《英汉对照…
Linear with round, linear as tangent as ball, circle and circle, plane and ball or ball and ball node. Fine of fourth 1873 Wei Wen Jianlu of Chinese and Western the 15th: ∑ of of sunken Zi smelt metal all ⒁ of copy of young of Ku of witch of material grave leans on Xie of condition of sex of abdomen of cutting of the feet of graceful of copy ⒈ to brag child show off ㄗ of Yi makes an appointment with shank of Xuan of brandish of of ぶ of of Ji of Xing of ending Du of instrument of Du of of Zi smelt metal! 931 year English-Chinese contrasts...
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