oxygen flow meter造句

I gathered my thoughts while pressing the oxygen flow meter into the wall.
In the case of St . Raphael's, one of several pins operating as safety features on the oxygen flow meter was missing, hospital officials said.
The hospital announced Wednesday that the women had died during cardiac catheterizations because a safety feature on an oxygen flow meter was missing, allowing it to be connected to the nitrous oxide outlet.
It's difficult to find oxygen flow meter in a sentence. 用oxygen flow meter造句挺难的