books مجارى مائية مضادة
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# waterways
# Third-order waterways
# Changing land and waterways
# inland waterways
# Legal status of international waterways
# waterways disinfection
# Counter-propaganda and ways to counter it
# Throwing into sewers and water bodies
# sewage treatment
# sewage microbiology
# Types of sewage water
# Separation of wastewater and sewage
# Division of waste water and sewage
# public sewage works
# riverbed patterns
# air ducts
# History of the sewers in Alexandria
# The beginning of the sewer idea
# compressed ducts
# wiring and suction suction company
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المجارى المائية المضادة (Info)
المجارى المائية المضادة:- المجارى المائية التي تنحدر على الجروف المستعرضة في اتجاه الانحدار العام للأرض فتجرى مياهها في اتجاه مضاد للاتجاه العام للمجرى الأصلى. (معجم الجيولوجيا)
