rotating-shutter time-of-flight spectrometer 转子飞行时间谱仪 time shutter 曝光时间 ; 时间快门 rotating shutter time-of-flight spectrometer 旋转快门飞行时间谱仪 ..
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凭借让照相机快门打开时间延长，通常超过1分钟，就能使用发光二极管、闪光灯，乃至闪光物体绘出光线踪迹。
By having a camera's shutter open for extended periods of time, often well over a minute, trails of light can be drawn with LEDs, flashlights, or even sparklers.
在这种情况下拍摄者会使用很短的快门时间并调小光圈，这样就不可能拍摄到黑色背景上那些很暗的物体，如星星。
Under those conditions photographers shoot with a fast exposure time and small aperture. That makes it impossible to capture faint objects in a dark background, such as stars.
这个功能让你按下快门后过一段时间再拍照(最多10秒)，它解决了另一个困扰人们多年的问题——没有摄影者的全家福。
This function delays the firing of the shutter (after the button has been pushed) for up to 10 seconds, fixing one of the age old problems in photography: the missing photographer.
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