amount of exposure meaning in Chinese

曝光量, 露光量

A concept in media planning stipulating that a certain amount of exposure to an advertising message is necessary before it is effective . often used interchangeably with the term effective frequency
广告媒介策划中使用的概念.指受众必须有一定的广告暴露频率,广告才能发生效用.经常与有效频率交替使用
The method uses the properties of wavelet to reconstruct a local region of the cross section of a body , using almost completely local data , therefore reduces the amount of exposure and computations in reconstruction , while has the same quality as filtered backprojection algorithm
利用小波的特性，该算法仅使用几乎是完全局部的投影数据去重建身体剖面上的某个局部区域，从而大大降低了x射线的辐射剂量和算法的运行时间，同时还具有和传统的滤波反投影法基本相同的图像重建质量。