SVG实现波浪效果

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        <text x="115" y="115" font-size="36px" fill="#000" text-anchor="middle" transform="translate(0,18)">50%</text>
           <circle r="100" cx="115" cy="115" fill="none" stroke-width="10" stroke="rgb(135,206,250)" />
           <circle cx="115" cy="115" r="90" fill="none" stroke="white" />
           <path d="M 25,115 C 67.5,74 162.5,156 205,115 A 90,90 0 0,1 25,115 z" fill="rgba(135,206,250,.8)">
               <animate attributeName="d" attributeType="XML" dur="3s" repeatCount="indefinite" 
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