This paper briefly introduces the correct using method of "catalogue classification retrieval" and "keyword retrieval" in Internet search engine.

简要介绍了网上搜索引擎中的“目录分类检索”和“关键词检索”的正确使用方法。

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The using and choosing principle and basis of the colorimetric ware in the spectrophotometric methods are introduced as well as the correct using method and maintenance.

介绍分光光度法中比色皿的选择原则和依据，以及正确的使用和维护方法。

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Using this method, you need to set the coding (during the cell creation) using the correct component location in the screen layout.

使用此方法，您需要在屏幕布局中使用正确的组件位置来设置编码(在单元格创建期间)。

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