Most economical channel section //most economical rectangular channel
7:14
Civil Engineering Basic Knowledge Part 4
12:33
Most economical triangular channel section
16:09
Most economical trapezoid channel section //open channel flow //
21:27
Most economical rectangular channel
15:05
Most Economical Rectangular Channel
27:43
Most economical trapezoidal channel
1:57:01
ሁለተኛ ፍቅረኛዬም ሰራተኛውን አስረገዘ || ሶስተኛ ፍቅረኛዬም ሰባት አመቴን አባከኖት ተለያይን|| ሴቶች ከእኔ ህይወት ተማሩ|| እንተንፍስ #13
17:49