A man sits safely self-composed operating azimuthcircle.
一个男子坐在那里，安然自若地操控着方向盘。
2
A man who wears a motorcycle hat and is dressed in thick clothes sits safely self-composed operate azimuthcircle in simple and crude"four-wheeler car".
一个戴着摩托车帽子、穿着厚衣服的男子坐在简陋的“四轮车”内安然自若操控着方向盘。
3
The azimuth and intensity of main stress, and stress-values varying with azimuth can be described according to the measuring results of stress in three directions by Mohr's circle graphic method.