The effect of under-exposure on the performance of gray scale projection algorithm is studied by synthetic and real video experiments.
通过合成视频实验探讨、实际视频实验论证相结合的研究方法，探讨曝光量不足对灰度投影算法性能的影响。
2
The source of exposure for the initial case is still under investigation, with exposure to infected poultry or an environment contaminated by their faeces considered the most plausible source.
该最初病例的接触源仍在调查之中，接触受感染的家禽或受其粪便污染的环境被认为似乎是最合理的接触源。
3
Usually one can first meter using a larger aperture (so that the metered exposure time is under 30 seconds), then stop down as necessary and multiply the exposure time accordingly.