The purpose is to present a common theory and method of shaft frame hardness testing and data processing.

旨在提供井架强度测试及其数据处理的一般理论和方法。

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The purpose is to present a common theory and method of shaft frame hardness testing and data processing.

旨在提供井架强度测试及其数据处理的一般理论和方法。

youdao