mass and centroid 质量质心
The moment-preserving thresholding method is used to pick-up targets, the mass centroid tracking algorithm and linear-fitting predicting approach are used to tracking targets.
采用矩持阈值分割方法提取目标，采用质心跟踪算法及基于线性微分拟合的记忆外推跟踪技术跟踪目标。
Aim: To measure mass, centroid and centroidal deviation of projectile body.
目的：对弹体的质量、质心及质偏进行测量。
Equipment mass were simulated by mass elements which were created at centroid of those equipment and linked with the mounting base on the car-body through spring elements.
在各设备质心位置创建质量单元，用弹簧单元将质量单元与底架上相应设备的支点连接起来以模拟设备质量的影响。
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