In micrographics, a specific method of computer output microfilming in which a beam of electrons is directed onto an energy sensitive microfilm.

缩微图形,一种专门的计算机输出微缩片方法,其将电子束直接能量敏感的缩微片上。

In micrographics, a measure of the remoteness of the copy from the original material, the first microfilm representation being the first generation microfilm.

缩微照相，度量副本离原始资料远近的程度。第一次缩微后的片为第一代缩微片。