According to the low packing ratio in a industry, the nonstandard tray sizes designing problem is proposed, and the SQL database techniques is applied to solve the problem.
针对某行业产品包装中标准托盘包装的利用率低的情况，提出非标准托盘的尺寸设计问题，并运用SQL数据库的运算功能实现了非标准托盘尺寸的优化设计。
The influence of three main factors such as lattice structure, packing ratio and dielectric constant ratio on complete forbidden band of 2-d air cylindrical photonic crystal is studied.
研究了晶格结构、填充比、介电常数比三个主要因素对二维空气圆柱型光子晶体完全禁带的影响。
The company settled upon "packing" images together by understanding their aspect ratio to create "a cohesive page while you scroll," said Marissa Mayer, VP of search products and user experience.
公司通过解析图片的宽高比来建立“当你卷动时的粘合页面”，以便把“打包”的图片放在一起。产品搜索和客户体验的副总裁玛丽萨·迈尔说到。
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