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Circular and catenary always represent the shapes of minor principal stress soil arch between two parallel walls, but which shape should be used in the calculation of active earth pressure on two parallel walls remains disputed. Considering fully developed wall friction or partially developed wall friction, circular and catenary, the two shapes of minor principal stress soil arch between two parallel walls are theoretically analyzed. According to the shapes of soil arch, the coefficients of earth pressure corresponding to different angle of internal friction and that of wall friction are obtained, and the formula of active earth pressure on two parallel walls is derived.

鉴于计算平行墙间侧土压力时关于土体小主应力拱形的选择尚存在争议，考虑墙土摩擦角充分发挥和部分发挥两种情况，对平行墙间土体小主应力圆弧拱和悬链线拱分别进行了分析，得到了对应于不同内摩擦角和墙土摩擦角的侧上压力系数，以及平行墙间侧上压力的理论公式。

Based on the basic principle of reflection and transmission in the process of the propagation of logitudinal wave, this paper recounts a new theory and method for the application of pile body completeness inspection data with reflection wave method to the quantitative determination of apparent reflection coefficients and the round travelling time of reflection wave.

摘要从纵波传播过程的反射和透射的基本原理出发，介绍了反射法桩身完整性检测数据在频率域中定量确定视反射系数和反射波往返时间的一种新的理论和方法。

Proposes a new method to calculate the heat transfer coefficients based on the superposition principle of heat flux i.

通过对热流相加法处理地面问题的分析，提出了一种新的用于计算底层地面传热系数的方法，即由热流量计算地面的当量传热系数。

By the reconstruction of the coefficients of the affined transformation of iterated function systems with probability vector, this makes the dynamic iterated question a static one, and makes it a typical one rank linear recurrence question.

基于代数算法的思想，对Hilbert曲线向三角域作了推广。

Pearson product moment correlation coefficients were used to analyze the effect of the age, cranial length and maxillary length on the molar's location in the maxilla.

但是后续的实验研究表明，上颌第一恒磨牙的位置并不是固定不变的，它会随着牙弓内、外因素的变化而发生位置的变化，影响错畸形的形成[1]。

As a test problem, the steady flow fields and hydrodynamic forces of a 6:1 prolate ellipsoid at different incidence angle are computed. Computed results including surface pressure coefficient, surface friction coefficient, and body hydrodynamic coefficients, are compared with experimental and numerical ones of published papers, the agreement is satisfactory.

作为算例之一，给出了6：1椭球体在不同攻角下定常流场和水动力的数值计算结果，包括物体表面的压强系数、切应力系数的分布及物体所受升力系数、阻力系数和力矩系数随攻角的变化规律，并与国外文献的计算和实验结果进行了比较，符合程度令人满意。

The mixing is discussed and the mixing coefficients are given. The oblate band structure is predicted and the 2+ prolate state is estimated to be in the energy range of 804—880keV.

由这些系数，可以说明中子i13/2破对引起的顺排对长椭球带的影响是一个渐进过程；并指出了2+态的能量范围在804—880keV。

Then, regulate the different proportion, integral, differential coefficients, and auto-adaptation can be easily obtained. It's widely applied that imitating the system by MATLAB to reach the prolepsis result in engineering practice.

利用MATLAB对系统的仿真，理论上达到了预期的效果，通过试验研究，获得良好的控制效果，证明理论模型正确、控制方法可行。

The properties of coefficients of performance of heat pumps with propane and isobutene are summarized.

对丙烷和异丁烷热泵的循环特征进行了理论分析与总结。2。

A calculation model based on artifical neural networks technology was proposed and used in the calculation of activity coefficients of methanol propanol water system.

提出了一种基于人工神经元网络的活度系数计算模型，并成功地应用于甲醇丙醇水系统的活度系数计算。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。