
·<img data-latex="\frac {{π}^{2}} {6}" data-qs-formula="true" src="data:image/png;base64,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"
·<img data-latex="\frac {{π}^{2}} {5}" data-qs-formula="true" src="data:image/png;base64,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"
·<img data-latex="\frac {{π}^{2}} {4}" data-qs-formula="true" src="data:image/png;base64,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"
·<img data-latex="\frac {{π}^{2}} {3}" data-qs-formula="true" src="data:image/png;base64,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"
出自:西南石油大学土木工程施工与组织(专升本)