point representing the mean position of the matter in a body
centre of mass的用法和样例:
例句
The disadvantageous effect should be considered when the deflection between the structural mass center and stiffness center exists. 摘要结构刚度中心与质量中心偏差较大时,应考虑扭转的不利影响,将高层建筑结构等效为悬臂杆,从顶至底依次选取脱离体。