It required a uuv to triangulate its position by listening to signals from a network of transponders that had to be placed in the water beforehand for the purpose.
它需要一个 uuv 通过收听来自转发器网络的信号来三角测量其位置，转发器必须事先放置在水中。
UUV
原声例句
经济学人 Science and technology
英语百科
Unmanned underwater vehicle
（重定向自UUV）
Unmanned underwater vehicles (UUV), sometimes known as underwater drones, are any vehicles that are able to operate underwater without a human occupant. These vehicles may be divided into two categories, remotely operated underwater vehicles (ROVs), which are controlled by a remote human operator, and autonomous underwater vehicles (AUVs), which operate independently of direct human input. The latter category would constitute a kind of robot.
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