1)unerring,无偏差的2)agonic,不成角的;无偏差的3)unbias(s)ed error,无偏误差4)bias free,无偏差5)approximate unbiased estimates of these variances,方差的近似无偏估计6)drift-free criterion,无偏差指标
用法和例句
With the data of permanent sample plot on two occasions,we give the approximate unbiased estimates of these variances.