By setting the density, the volume, weight and object center of gravity of the group or component can be calculated, and multiple calculation results can be combined to calculate the center of gravity and weight.
Find C of G（Find C of G）动画教程
After setting the density for a single group or component, the center of gravity, volume, weight, etc. can be calculated, and the label report can be generated.
Composite C of G（Composite C of G）动画教程
Select two or more result groups of "calculate gravity center volume" to merge and calculate gravity center, weight, etc., and generate annotation report.
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