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1. Oxford American Dictionary

   water hammer

   • IPA[ˈwôdər ˌhamər]

   美式

   • n.
     a knocking noise in a water pipe that occurs when a tap is turned off briskly

   • noun: water hammer

2. • 釋義

   n.

   名詞

   • 1. a knocking noise in a water pipe that occurs when a tap is turned off briskly a paddle fitted to the arm of the ball valve will also prevent water hammer
3. • 更多解釋

   water hammer

   • n.
     a knocking noise in a water pipe that occurs when a tap is turned off briskly: a paddle fitted to the arm of the ball valve will also prevent water hammer

   Oxford Dictionary