As an expert in chemical reference materials, I can tell you that the Perry Index, also known as the **Perry's Chemical and Engineering Reference Book Index**, is a comprehensive reference work in the field of chemical engineering. It is often used by professionals and academics to look up data on chemical compounds, processes, and engineering practices.

The index is part of the larger work "Perry's Chemical Engineers' Handbook," which is a standard reference in the field, providing detailed information on a wide range of chemical engineering topics. The Perry Index specifically serves as an alphabetical listing of substances, including their chemical names, synonyms, and CAS Registry Numbers, along with references to where more detailed information can be found in the handbook.

Here's the translation in Chinese:

Perry Index，也称为Perry化学工程师手册索引，是化学工程领域的一部综合性参考书。专业人士和学者经常使用这个索引来查找化学物质、工艺和工程实践的数据。

该索引是更大的作品“Perry's Chemical Engineers' Handbook”的一部分，这是该领域的标准参考，提供了广泛的化学工程主题的详细信息。Perry Index专门作为一个按字母顺序排列的物质列表，包括它们的化学名称、同义词和CAS注册号，以及在哪里可以找到手册中更详细信息的参考。

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The Perry Index is a widely used index of "Aesop's Fables" or "Aesopica", the fables credited to Aesop, the storyteller who lived in ancient Greece between 620 and 560 BC.read more >>