Darmois-Koopman-Pitman theorem
inadmissibility of Pitman estimator
pitman
光面滚子
普通滚子
滑面滚子
比特曼
联接杆
摇杆
结合杆
游梁拉杆
矿工
pitman arm upper bearing
Pitman Closeness criterion
PitmanCloseness准则
Pitman准则
Pitman Closeness准则
pitman’s measure of closeness
Pitman’s relative efficiency