Able to encode a maximum of about 4,000 alphanumeric characters in a square image, they lend themselves nicely to placement on a narrow receipt slip.

在一个方形图像内至多可编码约4,000个字母数字符号，它们刚刚好可以替代那种窄的收据条。

youdao

Able to encode a maximum of about 4,000 alphanumeric characters in a square image, they lend themselves nicely to placement on a narrow receipt slip.

在一个方形图像内至多可编码约4,000个字母数字符号，它们刚刚好可以替代那种窄的收据条。

youdao