books الدفاعة المروحية
If you do not find what you're looking for, you can use more accurate words.
# helicopter guidance tools
# Boeing Helicopter Systems
# Reduce helicopter noise
# helicopter rotor
# Helicopter uses
# How to make a helicopter
# The dangers faced by the helicopter
# The dangers of flying by helicopter
# Helicopter noise sources
# History of the helicopter
# Helicopter specifications
# helicopter operation vietnam
# Helicopter power generation
# helicopter operators
# helicopter window
# Was the jet aircraft invented first or the helicopter?
# US helicopters
# black chopper
# Steering the quadcopter
# Operating helicopters
View more
الدفاعة المروحية (Info)
الدفَّاعة المروحية:- جزء دوَّار في المضخة مزود بأجنحة لحمل المائع على الدوران فيكتسب بذلك طاقة تعتمد على السرعة المحيطية لأطراف الأجنحة . (معجم الهيدرولوجيا)
