Mathematical analysis leads to a formula for this dependence, which is analogous to the formulae (2) and (3).
依赖于这个，数学分析得出一个公式，这个公式类似于公式(2)和(3)。
A precise formula for equivalent load of prestressing force in curved girder of arc form is derived from the fundamental formulae of differential geometry.
由微分几何基本公式导得圆弧曲线梁中预应力等代荷载的精确公式，预应力钢索在曲梁中竖弯与平弯均较平缓，此时公式可得以简化。
With equivalent flow resistance method and on the base of the productivity formulae of a horizontal well, a new productivity formula of a fishbone well was derived in the paper.
根据等值渗流阻力方法和水平井产能计算公式推导了鱼骨型水平井产能计算公式。
According to the results of calculation and analysis, Colebrook formula is considered as a accurate formula, and approximate formulae only can be made rough calculation and mathematical analysis.
计算和分析结果表明：科尔布鲁克公式是紊流混摩区的较准确的计算公式，近似公式只适用于粗略的计算和数学分析。
In this paper, virtues and defects of several formulae of calculating comprehensive index of water quality are pointed out, and a new formula is introduced.
在比较各种水质综合指数计算模式的基础上，提出了一种新模式。
In this paper, virtues and defects of several formulae of calculating comprehensive index of water quality are pointed out, and a new formula is introduced.
在比较各种水质综合指数计算模式的基础上，提出了一种新模式。
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