例句與造句

1. In this paper , we discussed the procedures of quantiles , maximum - likelihood , probability weighted moments , moments , least square , the best linear unbiased estimate , good linear unbiased estimation , and the best invariant estimate to the parameters of gumbel distribution , then give out the expectation and variance - covariance respectively . we compared the statistical behavior of these eight estimate procedures not only theoretically but also in the monte - carlo simulation
   本文利用分位數(shù)法、極大似然法、概率加權(quán)矩法、矩法、最小二乘法、最佳線性無偏估計(jì)法、簡單線性無偏估計(jì)法、最好線性同變估計(jì)法對gumbel分布中的參數(shù)進(jìn)行估計(jì)，分別給出了這八種估計(jì)量的期望、方差和協(xié)方差。
2. It's difficult to find invariant estimate in a sentence. 用invariant estimate造句挺難的