After rangefinding, "0000" displayed on displayer on the upside of right eyepiece indicates no laser, reasons may.
当测距之后，左目镜上排显示器显示“0000”，表示无激光。产生无激光原因是。
3
Finally, through analyzing the experimental data, such as infrared sensor rangefinding as well as local navigation, it is concluded that the strategies are able to satisfy the.