draw edge radius

例句：

1. 1.The car's front edge radius is measured in millimeters.
   这辆车的前边缘半径是以毫米为单位测量的。
2. 2. The engineer drew a sketch of the new bridge design.
   工程师绘制了新桥梁设计的草图。
3. 3.The radius of the circle can be calculated using the formula r = sqrt(a² - b²).
   圆的半径可以通过公式r = sqrt(a² - b²)来计算。