LSabbr.左边（=left side）abbr.信笺已签名（=letter signed）abbr.图书馆学（=library science）abbr.盖印处（=Locus sigilli）LSAn.电平移动放大器(限制空间电荷积累)

1. After deriving the mathematical equations, a comparison between the LS and the ML estimators was performed.
   在获得了相应的数学模型后，对最小二乘估计和最大似然估计方法进行了比较。