It is mainly composed of sonar range finder which includes comprehensively surface instrument, subsurface equipment and different kinds of accessory.

该技术主要仪器为声纳测距仪，它包括地面仪器、井下仪器及各种辅助设备。

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As they wove around the maze, the Lingobots created spatial maps of their surroundings, with the help of on-board cameras, laser range finders and sonar equipment that helped them avoid walls.

ENGADGET: Lingodroid robots develop their own language, quietly begin plotting against mankind

Orcasub comes outfitted with sonar for collision avoidance, a digital long-range communications system and a 60, 000 lumen LED lighting rig.

ENGADGET