Also, you need to create two text attributes in Rational Focal Point.
同样，您需要在RationalFocalPoint中创建两个文本属性。
The focal length you need depends on your distance from the burst and what you're trying to capture.
你所需要的焦距取决于你和被拍摄焰火间的距离，以及你想捕捉到怎样的画面。
"When you have a small space, you need to create one focal point per room," says Suzanna.
“当你有一个小空间，您需要为每间房创建一个联络点，”苏珊娜说。
You will need to know the focal length of your telescope and the physical size of your CCD's pixels to calculate the pixel scale.
你必须了解望远镜的焦距以及CCD的物理像素大小以便计算像素分辨率。
If you wish to photograph the moon retaining as much detail as possible with a minimum of cropping to fill the frame, you need lenses with a long focal length.
如果你想拍摄月球保留尽可能多的细节用最少的种植来构图，镜头的焦距。
Based on the new configuration of optic stress system, we need to design a wide bands and long focal night vision collimating lens.
依据新配置的光应力系统试验要求，需设计一套大视场、宽光谱、长焦距的微光准直物镜。
To study regional average stress field, we need to choose a population of focal mechanism solutions of earthquakes in the massifs where there are significant tectonic structures.
选择具有地震构造意义的地块或地震带内大量地震的震源机制解研究区域平均应力场。
To study regional average stress field, we need to choose a population of focal mechanism solutions of earthquakes in the massifs where there are significant tectonic structures.
选择具有地震构造意义的地块或地震带内大量地震的震源机制解研究区域平均应力场。
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