channel with trapezoidal section
open trapezoidal Channel
trapezoidal channel with an arc slope angle
trapezoidal open channel
trapezoid canal with arc-bottom
box girder with trapezoidal section
Rib optical waveguide with trapezoidal cross section
Waveguide with trapezoidal cross section
(pressure)gauge with bottom connection
axial channel with deepwater acoustic track
Boreholes on Circular Arc with Inclined Plane
carbonate oil reservoir with bottom water
channel with compound section
channel with compound sections
channel with concrete lining
channel with crosscurrent