A distance setting, as on a camera, beyond which the entire field is in focus.
无限远标志一个距离的设定，比如在照像机上，表示整个场景都在焦点内。
Shadow technology and a high-speed camera are combined to investigate the flow field evolvement.
采用了阴影技术和高速摄影相结合的方法，对激光推进流场演化过程进行了考察。
Shadow technology and a high-speed camera are combined to investigate the flow field evolvement.
采用了阴影技术和高速摄影相结合的方法，对激光推进流场演化过程进行了考察。
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