index line meaning in English

分度线
索引行
指标线

When it arrives at the predetermined destination , the robot controls multi - putting - ball mechanisms and puts the game - ball into the drum simultaneously . on the other side , on the basis of the theory and experiment , we subjoin a line - tracking device in the robot system , ensuring the correct moving of the robot along the white index line on the venue , in order to increase the accuracy of orientation . during the automatic moving , the robot measures the position on the venue by itself , moreover , judging its direction and automatic cut - away with the single - chip microcomputer . this system has been finished the experiment , and find credibility , be in point
同时，为了保证机器人正确地沿着比赛场地上的指示线行走，提高机器人定位的准确性，还从理论和实验的角度，在机器人上增加了一套寻线系统，以便机器人在其自动行走的过程中，随时检测自身的位置状态，判断偏离方向，进行自动的纠正。这一套寻线系统已完成了实验，且比较可靠、适用。