重复曝光是指拍摄时在同一张原片上进行二次以上曝光的技术和方法。
照完一张照片后必须过卷，否则底片会重复曝光。
You have to wind on after taking a picture, or your negative will be double-exposed.
本研究旨在探讨心率变异性与重复曝光，以镇静或兴奋的音乐。
The present study aimed to examine heart rate variability with repetitive exposure to sedative or excitative music.
显然，如果你有许多张图片，重复这个步骤直到你把所有曝光的图片都集中到一张图片上。
Obviously, you can have as many images/exposures as you like and continue this process till you have dragged all your exposures onto the one image.
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