Thiết bị phản hồi âm thanh dưới nước
Đây là phát minh của Christopher Huskamp và Bonnie Gorsic thuộc Công ty Boeing của Mỹ sử dụng hệ thống phản xạ âm thanh định vị máy bay trong môi trường nước.
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u5BY4bqtUOG7kFg7Ll074buQWyFdO0vhu5DDtCwk4bq14buQXVLhur3hu5DhurdA4buQfVJb4buQWDsi4buQw6ksJVjhu5DhurMhW+G7kHssPVvhu5BZJuG7kFlSXTrhu5A7YV1LTy/Eg8OT4bqyO+G7siLhu5Dhu487Ll074buQxIM74bqtTy/Eg8OT