 ⌠Infrasound indicator ⌠ |
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⌠Hose pressure intrusion sensor ■ |
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⌠ Tsunami wave sensor on the deep ocean floor■ |
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⌠Radar with sound indication■ |
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"Guarding sonar system by surrounding water" |
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"Passive location of moving objects in water" |
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"Adjusted optic masking" |
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"Territory perimeter guarding system" |
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"Combined intrusion sensor for shut apartment volume" |
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