单词	ovals of Cassini
释义	ovals of Cassini ovals of Cas·​si·​ni -kəˈsēnē, -ka-, -kȧ- : a curve that is the locus of points of the vertex of a triangle whose opposite side is fixed and the product of whose adjacent sides is a constant and that has the equation [(x + a)2 + y2] [(x − a)2 + y2] − k4 = 0 where k is the constant and a is one half the length of the fixed side Word History Etymology after G.D. Cassini †1712 French astronomer First Known Use 1837, in the meaning defined above
随便看	spher spher- spheral spherality spheraster spheration sphere sphere crystal sphere fungus sphere gap sphere of influence sphered sphereless spheres spheric spherical spherical aberration spherical angle spherical astronomy spherical coordinate spherical excess spherical geometry spherical lens spherical mirror spherical perspective

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。