• 2021-04-14
    给定图示正方形,则图形对形心轴y和y的惯性矩Iy1与Iy之间的关系为( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/77cbf7a97695404aaa4569d26f5659d6.png