一张频闪观测仪的图，对蟹状星云的中心，进行频闪观测曝光。
A stroboscopic picture, a stroboscopic exposure was made of the center portion of the Crab Nebula.
在本文中，对火焰观测仪的光学系统作了详细讨论，并给出带有转角棱镜的光学系统设计的结果。
The optical system of the flame-observing tube is discussed in detail and the result of the optical system design with a turning angle prism is given in this paper.
霍洛·维茨博士已经建好了一个合适的探测仪，因为对放大率的要求不高，所以这个探测仪能够观测到较广的太空视场。
Dr Horowitz has already set up one suitable detector and this, because no huge magnification is involved, is capable of looking at broad swathes of sky.
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