Man wearing a round flat-topped hat, known as the "cap", mainly white, but also black.
男子戴平顶圆帽，俗称“顶帽”，以白色为主，也有戴黑色的。
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We also found turning wave and flat topped wave...
并发现正常限血流图波型可以出现转折波和平顶波。
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