共焦的有共同焦点的。

Of or relating to a focus.

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讨论了平面情况时两个共焦的椭圆轨道之间的最佳单冲击过渡及其意义。

This paper studies the best one impulse transfer between two coplanar and confocal elliptic trajectories and its application.

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叙述同一光路中双激光获得共焦的原理和特点及其实现技术，并就一实例的设计结果进行评价。

The principle and property of synchronous focusing of a twin-laser in same light path and its realization technique are described. The design result is evaluated by use of a practical example.

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