中心负荷 central concentrated load 中心距 centre distance ;centre to centre distance ;centretocentre ;distance between centers ;width between centers 中心距角 n. distance angle from center .
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?顶尖间距
... centre front and centre back 前正中线和后正中线 centre to centre distance顶尖间距 centre to centre method 中心连接法 ...
In this paper, cluster centre and the distance from point to the cluster centre was defined, and a dynamic analysis method for plane point set was put forword.