最主要的程序有: ① 程序偏移 ( Program Shift ):在按程序曲线给出某亮度情况下曝光量的光圈与快门组合时 ,摄者可按自己的要求拨动手轮改变光圈和快门的组合,而曝光量不变,...
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His comments reflected what other officials have said that ending the F-22 program is just one part of the effort to shift the focus of U.S.defenses away from what they see as the relatively remote possibility of a war with a major power and toward the types of smaller-scale conflicts of recent years.
VOA: standard.2009.07.21
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