1. 校验位：角反射天线 corner reflector antenna | 校验位 check bit | 校验字符 check character

2. 检测位：check 检测 | check bit 检测位 | check list 清单

3. 核对位：check 核取 | Check Bit 核对位 | check box 复选框

noun

1. (computer science) a bit that is used in an error detection procedure in which a 0 or 1 is added to each group of bits so that it will have either an odd number of 1's or an even number of 1's
e.g., if the parity is odd then any group of bits that arrives with an even number of 1's must contain an error

Synonym: parity bitparity