automatic back bias

back bias voltage

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

(pressure)gauge with back connection

1-back

a back answer

a back issue

a back number

a back order

a back stationary flat system with suction device

a basket carried on the back

A Dream Back To Qinghe River

a rolling back of human rights and rule of law

a stab in the back