The field stop is the metal ring inside the eyepiece barrel that limits the field size.

视场光阑是安装在目镜镜筒内的金属的圆环用来限定范围的大小。

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The physical stop which corresponds to the entrance window is then the required field stop.

入射窗所对应的实物光阑就是所要求的场光阑。

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Essentially, the field stop of the eyepiece encompasses a linear field of view from the telescope.

从本质上讲，目镜的视场光阑与望远镜有线性关系。

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Will leveling the playing field stop takeovers and use of leverage?

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Second, funding must dry up for work in the discredited field for professors to stop engaging in it.

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