The use of active sonar is generally avoided unless absolutely necessary, as it gives away the sonar user’s location. It can also be detected further away than it can itself detect objects such as submarines.
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ВС России уничтожили пункт управления украинских гексакоптеров типа «Баба-Яга»08:50
周斌全退休后，涪陵榨菜进入人事调整的密集期，一大批老臣陆续离场。
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On this episode of The Vergecast, The Verge's Dominic Preston joins Nilay to explain the existence of this particular mobile device, as well as wrap up all the weird and wonderful gadgets he and the team saw at MWC. There was also a "robot phone" that dances to (and so far, only to) "Believer" by Imagin …