无级光圈优先模式，确保可靠的和精确的曝光。
The stepless aperture priority mode ensures reliable and precise exposure.
精确定量满月时的曝光时间不好捉摸;如果景物有散射并且直接受光，那么就 在ISO 100下使用 f/2.0和 30 秒曝光作为初始值， 然后向上图的1——4四个方向进行调节。
Gauging exposure times during a full moon can be tricky; use f/2.0 and 30 seconds at ISO100 as a starting point (if subject is diffuse and directly lit), then adjust towards scenarios 1-4 accordingly.
在电子束曝光胶图形的三维显影模拟工作中，首次使用了最精确的三维线踪模型。
The most accurate ray-tracing model is used firstly on the development simulation of resist exposed by electron beam.
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