- 基本释义
- 英英释义
- 更多资料
- 1. 【医】物焦点
网络例句
以下结果来自互联网
- physics of earthquake foci
震源物理 - (optics) having two foci.
（光学）有两个焦点。 - Having the same focus or foci. Used of a lens.
共焦的有共同焦点的。用于透镜 - the longest axis of an ellipse or ellipsoid; passes through the two foci.
椭圆中较长的那个轴；穿过两个焦点的轴。 - the sums of the distances from the foci to any point on an ellipse is constant.
椭圆规是构造椭圆的工具.。