Moreover, there is a simple mathematical formula for measuring the cumulative annual drift of the day of the week from the start of the century.
有一个简单的数学公式来计算从世纪初开始的星期年度移位。
The stability of the underhand drift cemented filling body is analyzed by using stress arch theory and beam theory, and a simple judgment formula of the stability is obtained.
将压力拱理论与简支梁理论相结合分析了下向进路胶结充填体的稳定性，给出了充填体稳定性的简易判定公式；
The stability of the underhand drift cemented filling body is analyzed by using stress arch theory and beam theory, and a simple judgment formula of the stability is obtained.
将压力拱理论与简支梁理论相结合分析了下向进路胶结充填体的稳定性，给出了充填体稳定性的简易判定公式；
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