back open dart

open bottom barge

trapezoidal with arc bottom open channel

back press roller

bottom drive

angles back to back

Back filling at abutment back of Bridge or culvert

back reaming and back transportation

back to back

back to back houses

Back-to-Back

bottom produce bottom product

bottom product bottom produce

open window theory

2-D open channel

3-D open cells network structure

3-D open cells structure

3rd stage open channel closure

4-way open T equipment

88open