1)error-free program,无误差程式2)quasi non error,准无误差3)free from error,无误差的4)zero error,无误差5)error,random,无规误差6)unbias(s)ed error,无偏误差
用法例句
Every day correction is made twice, thereby the error can be controlled within a certain limit, the quasi non error realized and larger error caused by accumulating avoided.