用pumping action造句子，“pumping action”造句

The rapid pumping action of the tool hurls the abrasive particles at the workpiece at high velocity, thus grinding the workpiece to the shape of the tool.

Thus the ischemic regions of the heart protect themselves by curtailing their contribution to the pumping action of the heart.

The work, reported in Nature Biotechnology, was carried out to study the pumping action of muscles, which could be used to help design better artificial hearts.