波は

counter

counter for waves (of a repeated occurrence)

Used to count distinct waves or surges of something that comes in repeated, often sequential, occurrences, such as sound waves, radio waves, or figurative waves of emotion or activity.

• その地じ震しんは数すう波はの大おおきな揺ゆれをもたらした。

  The earthquake brought several waves of strong shaking.

• 新しん製せい品ひんの発はっ表ぴょうに合あわせて、広こう告こくを三さん波ぱに分わけて打うった。

  We ran the advertisements in three waves to coincide with the new product launch.