The energy criteria have been applied to analyzing the failure condition of surrounding rock masses of a circular tunnel in practice.
并应用上述准则讨论了隧洞围岩发生整体破坏的临界条件。
Returns the unfollowed user in the requested format when successful. Returns a string describing the failure condition when unsuccessful.
成功则返回被取消关注人的资料，失败则返回一条字符串的说明。
Returns the unfollowed user in the requested format when successful. Returns a string describing the failure condition when unsuccessful.
成功则返回被取消关注人的资料，失败则返回一条字符串的说明。
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