短语词组短語excentricity xctr 偏心度numerieal excentricity 偏心率manipul átor excentricity 離心率控點úchyt excentricity 離心率控點excentricity of drilling pipe 鑽具偏心度;鑽具偏疼度excentricity measuring instrument 偏心度測量儀 返回 excentricity