• 2021-04-14
    圆环形截面轴的抗扭截面系数 ,式中 , d 为圆轴内径, D 为圆轴外径。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/43b35eea141e476ca29415882e08ad2c.png