The permissions mask allocates 8 bits each to the four possible types of key accessor: possessor, user, group, and other.

权限掩码给四个可能的密钥访问者类型各分配 8 位：所有者、用户、组和其他。

youdao

Because most letters only need 8 bits, I have more than I need to reflect a letter in each pixel of an image.

因为大部分字母只需要8位，在图片的每个像素中能用的位比这多很多。

youdao

Data length (8 bits) : total length of data in bytes.

数据长度(8比特)：数据的总长度(以字节为单位)。

youdao