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<!DOCTYPE html>
<html>
<head>
<title>HTML:<meter> optimum 属性 - 大卫编程网(div.cn)</title>
</head>
<body>
<p>Display a gauge:</p>
<p><meter value="0.3" high="0.9" low="0.1" optimum="0.6"></meter></p>
</body>
</html>
