books echo sounder
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# echo sounding device
# echo sounding meter
# Echo monitoring in animals
# Echo positioning
# echo sensing
# Echo-like transparency
# echo test
# Echo sensor
# Human echolocation
# Ultrasound examination
# Echometer
# echo rewind
# Echo House
# The dew drop and the echo
# Terror in the Echo
# Echo Bridge
# echo phenomenon
# Echo uses
# The difference between echo and reverberation
# echo cancellation
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echo sounder (Info)
- echo sounder:- جهاز لتقدير عمق المياه في مجرى أو بركة يقيس المدة بين توليد إشارة الحس وبين عودة صداها بعد أن تسبر القاع ،ويقوم الجهاز تلقائيا بتسجيل هذه المدة وتحويلها إلى عمق. (معجم الهيدرولوجيا)
- echo sounder:- a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return (Princeton WordNet 3.1)
