| 释义 |
diameter /dai'aemita(r); dai'aematv/ n measurement across any geometrical figure or body; (length of a) straight line drawn from side to side through the centre, esp of a circular, spherical or cylindrical form: 直径 (横过任何几何图形或物体的度量; 穿过圆心、球心、或圆柱中心、两端及于周边之直线或其长度); 对径; 径; 倍： the ~ of a tree-trunk; 树干的直径; a lens that magnifies 20 ~s, that makes an object look 20 times longer, wider, etc than it is, r- the illus at circle. 放大二十倍的透镜 . ( 参看 circle 之插图) 。 |