虽然用画布、CSS属性如border - radius，或者就用纯背景图，今天画曲线已经容易多了，但是仍然不常见。

While it's much easier today to make curves on web pages using the canvas, CSS properties like border-radius, or just plain background images, it's still not always trivial.

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这里使用空间填充曲线来保存空间和拓扑属性（请参阅 参考资料 一节，找到 H. Sagan 撰写的书籍）。

The generation employs space filling curves to preserve the spatial and topological properties (see the Resources section for the H. Sagan book).

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方法：采用离子对萃取—分光光度法测定，并对标准曲线制备、加样回收率试验、精密度试验、专属性试验、耐用性试验等项目进行了方法学考察。

METHODS:Spectrophotometry of ion-couple extraction was employed and methodology was examined for preparing standard curve , added aconitine recovery, precision, exclusivity, and durability.

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