round-oval-round

pressure reducing valve reducing valve

valve disc type breath valve

,all-round

45 hot-rolled round steel

45 Round Steel

45# Round Steel

6063 round alloy ingot

a new round development of Shanghai

a new round economic growth

a new round of active fiscal policy

a new round of prospecting

a new round of talks

a round jet in co-flow

a round of excavation

a round peg in a square hole

a square peg in a round hole

AC moving coil round instrument

AC moving iron round instrument

AC rectifying type round instrument