By using the ideas of semantic markup for the content structure, we can produce Web pages with a reasonable layout on older browsers, even when styling is not available.

通过对内容结构使用语义标记，我们生成的Web页面在老式浏览器上具有合理的布局，甚至在样式不可用时也是合理的。

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By optimizing the choice and layout of the air tanks, brake valves and brake pipelines, more reasonable time for braking coordination is obtained, and the braking safety is enhanced.

通过优化储气筒、制动阀以及制动管路的选择与布置，获得更合理的制动协调时间，以提高制动安全性。

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By means of reasonable layout of the Chinese characters machine code table, the complexity of the searches arithmetic based on the digital keyboard is reduced.

通过合理地汉字码表编排，降低数字式行列键盘汉字机内码检索算法实现的复杂度。

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