That exposed foot on the ground directly to the bottom line of the mountain to start stepping stone circle, the rockery is like putting on the ground like.
露脚：即在地面上直接做起山底边线的垫脚石圈，使整个假山就象是放在地上似的。
2
Putting forward the intersection circle algorithm that seeks the feasible seat of nodes and virtual cell algorithm that seeks the service center.
提出相交圆算法寻找干线节点的实际可行位置；以及寻找网络相对业务中心的虚拟小区方法。
3
The complete circle is formed by putting the end of the cable into one of the sockets.