某些系统（例如带有聚质子酸的系统）适用于电子表格计算。

Some systems, such as with polyprotic acids, are amenable to spreadsheet calculations.

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注意： 如果这个表格的名称与这个用户数据库中已经存在的名称相同，这个系统就不能创建这个表格。

Note: The system fails to create the table if a table with the same name already exists in the user database.

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新的系统目录表格sysfragdist，为此功能引入。

A new system catalog table, sysfragdist, is introduced for this feature.

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Generally, you think about the immune system protecting against different classes of pathogens and several classes of pathogens are shown on this table.

大体上,你们会认为免疫系统使,我们免受不同种类病原体的侵害,这个表格里介绍了几类病原体

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