microdot

漢語翻譯

a. 微粒的
n. 微粒照片, 小粒 *

英文解釋：

名詞 microdot:

1. photograph reduced to the size of a dot (usually for purposes of security)

詳細解釋：

mi.cro.dot

n.（名詞）
A copy or photograph that has been reduced to an extremely small size for ease of transport and purposes of security.
微粒照片：為易於運送或保密而將印刷品或照片縮小至極小尺寸的照片