- 更多网络例句与近似计算相关的网络例句 [注：此内容来源于网络，仅供参考]
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The formula can be used in approximate calculation of instable critical load of high pier in the design and construction.
本文利用能量原理的Ritz法，在对截面惯性矩变化作线性假定后，推导出变截面空心薄壁高墩失稳临界荷载近似计算公式，可用于设计施工中对高墩失稳临界荷载的近似计算。1中心压杆稳定理论及能量原理中心压杆的失稳问题是稳定问题中的一个最基本的问题。
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Based on a lot of calculating analyses on various working condition, the thesis give the approximate calculating formula of multi-order natural frequency of vibration of round silo.
对不同直径、不同高度的实体单仓进行了大量的、多种工况的计算分析的基础上，提出了计算圆型筒仓的多阶自振频率的近似计算公式。
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With the use of absorption chiller performance model, an approximate calculation method was derived for the absorption chiller unit with a quantitative analysis of the effect of operating parameters on the absorption chiller performance. The formula is simple, physically clear and accurate enough. Its correctness was verified by calculation examples and model predictions were compared against performance data from experiments with favorable results.
给出单效吸收式制冷机局部定量分析近似计算方法，解决了工程上吸收式制冷机局部定量分析计算时的简化计算问题，提出的近似计算方法在精度和计算量方面均具有一定的优势，既解决了吸收式制冷机变工况计算问题，又满足实际机组经济性诊断的需要，实例计算证明了理论模型和诊断方法的准确、简捷性。
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In combination with the crushed rock slope as an example, the allocation of an anchorage force on longitudinal beams and transverse beams is calculated by adopting the distribution coefficient law of the nodal form at first. Then the internal forces of the lattice beam are calculated respectively through the software on the basis of Winkler elastic foundation model and the semi-infinite foundation model, and then compared with the internal forces which are based on simplified foundation pressure calculation. The active pressure of rock is calculated approximately by Ranking soil pressure theory in the working stage. Sequentially, the reinforcing bars are disposed by two-stage's averagely calculated values.
以破碎岩质边坡为例，采用节点荷载分配法计算了锚索锚固力在格构梁纵、横梁之间的分配比率，然后基于Winkler弹性地基模型和弹性半空间地基模型分别计算格构梁在张拉阶段的内力，并与采用简化的地基反力计算值对比；采用朗肯土压力理论近似计算在工作阶段主动岩体压力，将地梁视为在线性分布力作用下倒置于坡面上的连续梁，按力矩分配法计算地梁内力，取两阶段计算平均值进行配筋。
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According to the characteristic that the definition point of the Q matrix of wave front is always located on the extremum point on the axis of the beam, a three-dimensional formula for the rectificative factor of phase in complex ray paraxial approximation is proposed, which calculates the rectificative factor of phase directly without considering the calculation of the main directions and curvatures and the rotation of the coordinates, thus simplifying the paraxial approximation calculation by the complex ray expansion method.
根据波前Q矩阵的定义点总位于波束轴上极值点的特点，提出了三维复射线近轴近似相位校正因子计算公式。该公式不用考虑主方向和主曲率的计算和坐标旋转，直接计算相位校正因子，从而简化了复射线展开法的近轴近似计算。
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It was also found that the estimation of incident energy associated with energy transfer to the surface adatom could be employed in guidance of the experiments, although some approximations were introduced in the proposed model.
尽管在计算模拟中引入了一些近似，公式中也没有考虑离子、原子流比值和温度效应，但是，离子向表面增原子能量转移的近似计算结果，仍具有指导实验的预言性和适用性。
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But in practical operating, overvoltage caused by reignition of the vacuum switching device frequently appears, and it result in damage of the capacitor bank or the switchgear itself. Ensuring the switchgear against reignition and installing a protective device are two main approaches to avoid the phenomenon. In this paper, a study on overvoltage caused by reignition due to capacitor bank switching with the vacuum switching device and its preventive measures are carried out. The main work which has been done and researches are as follows: 1. The producing mechanism of overvoltage and its influence factor are analyzed. It is pointed out that single-phase reignition is the main reason for damage of the switchgear and two-phase reignition is the main reason for damage of the capacitor bank,so overvoltage of single-phase reignition and two-phase reignition are the emphases of prevention. 2. Analysis of the special working condition of the operating switch for capacitor bank is carried out. It indicates that the vacuum switching device is difficult to realize no-reignition under this operation condition, so it is more practical to adopt protection devices. 3. Analyses of protection effect of RC and MOA and their shortages are carried out. It shows that the two methods can only restrain effectively overvoltage caused by single-phase reignition, and they cannot protect the capacitor bank when reignition of two-phase occurs. 4. The operation principle of G-R damping device is analyzed and discussed emphatically.
本文针对真空开关投切电容器组时因重燃而产生的过电压及其防治措施进行了研究，所开展的主要工作和研究结果如下： 1、对过电压的产生机理及其影响因素进行了分析，指出单相重燃是导致开关设备损坏的主要原因，而两相重燃则是导致电容器组损坏的主要原因，因此单相重燃和两相重燃过电压是防护的重点； 2、对电容器组操作开关的特殊运行条件进行了分析，指出在这种运行条件真空开关难于实现不重燃，因此采用保护装置更具有现实意义； 3、对RC与MOA的保护效果和存在的不足进行了分析，指出这两种方法均只能有效抑制单相重燃过电压，而不能在发生两相重燃时保护电容器组； 4、重点对G-R阻尼装置的工作原理进行了分析和讨论，指出该装置接入后线路中将会出现两种频率的高频振荡，而电容器组上的过电压是由这两种振荡共同决定的； 5、根据对上述两种振荡的分析指出存在一个最佳电阻值使得过电压最低，并提出了电容器组电压和最佳电阻值的近似求解方法； 6、使用电气暂态分析软件MATLAB对G-R装置的保护效果进行了仿真计算，证实该装置确实可以有效抑制重燃时的电容器组过电压； 7、根据仿真与近似计算结果的偏差提出了近似计算的修正方法，经过修正后的过电压计算结果与仿真结果吻合较好； 8、对G-R装置中放电装置G与阻尼电阻R的要求进行了分析，指出采用编织电阻和真空间隙可能是最佳选择。
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On account of the fact that the empirical formula given by Building Code for calculating the height of compression area in reinforced concrete member subjected to small eccentricity will result in less amount of steel reinforcement so as to decrease the factor of safety, thas a more accurate empirical formula is presented in this paper.
文中指出了新规范关于钢筋混凝土小偏压构件在对称配筋计算时截面受压区高度近似计算公式会引起较大的配筋误差，从而建议了合理的计算公式，同时对&中和轴位于翼缘内的工字形对称配筋小偏压构件&的配筋计算作了补充。
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Simultaneously, the exports of ionization rate and nonionzed concentration are set up as a powerful tool for studying thoroughly the freeze-out effect. dN〓/dp and dN〓/dn are neglected in the linearized equation system of the iteration methods of Newton and Gummel, due to having lower 15 orders or more than dN〓/dn and dN〓/dp, thus the computing effort is cut down with no effect on precision. A new cut-off technique is adopted to accelerate the convergence speed, about twice reduced for Newton iteration method and six times or so for Gummel iteration method. The approximate formulae of Fermi-Dirac statistics are also put forward with simpler form and higher precision. 3. A term dependent on time is added to the electron and hole current succession equations respectively. It is only this model that conservation of charge in transient analysis and alternating small-signal analysis at low temperature can be kept by. 4. The performance of SE-PISCES is explained by the simulation example of PISCES-2B, diode.
研究了低温半导体器件模拟的数值方法：对载流子浓度进行了新的归一化；编制了不考虑掺杂所引进的内建电场时的电离率计算程序；由于低温杂质电离率随偏压状态而变化，为此编制了每次求解迭代时的电离浓度计算程序，并将其插入到求解迭代程序中；同时，设置了杂质电离率和未电离杂质浓度的出口点，为更深入地研究冻析效应提供了有力工具；在Newton迭代法和Gummel迭代法的线性化方程组中忽略了dN〓/dp、dN〓/dn，是因为它们比dN〓/dn、dN〓/dp低15个数量级以上，这样减小了计算量又不影响模拟精度；对Newton迭代法和Gummel迭代法采取了新的截断技术，提高了收敛速度，Newton法迭代法和两次左右，Gummel法减少六次左右；给出了表达式更简单而精度更高的Fermi-Dirac积分近似计算公式。
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According to the post-tensioning method in prestressed concrete members,the calculation method of prestress losses caused by the deformation anchorage device,slip of tendon and joint compression was big in the error and narrow in the scope of application.
针对后张法预应力混凝土构件中由锚具变形、预应力钢束回缩和接缝压缩等引起的预应力损失计算方法适用范围较窄和误差较大的缺点，基于变形协调条件，通过分段近似计算方法，建立了锚具变形、预应力钢束回缩和接缝压缩等引起的预应力损失计算公式，并与实际预应力混凝土T形截面简支梁的计算结果进行了比较。
- 更多网络解释与近似计算相关的网络解释 [注：此内容来源于网络，仅供参考]
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approximate calculation：近似计算
认可图 approved plan | 近似计算 approximate calculation | 近似公式 approximate formula
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approximate calculation：近似计算,概算
calculation 计算,运算,计算结果;仔细分析;算计 | approximate calculation 近似计算,概算 | cost calculation 成本计算
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approximate construction：近似作图
approximate calculation 近似计算 | approximate construction 近似作图 | approximate continuity 近似连续性
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approximate construction：近似准
approximate calculation 近似计算 | approximate construction 近似准 | approximate continuity 近似连续性
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approximate continuity：近似连续
approximate calculation 近似计算 | approximate continuity 近似连续 | approximate contour 近似等高线
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approximate formula：近似公式
近似计算 approximate calculation | 近似公式 approximate formula | 近似法 approximate method
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approximation calculus：近似计算
approximation近似 | approximation calculus近似计算 | approximation of lagrange function拉格朗日函数近似
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calculus of approximation：近似计算
calculator 计算机 | calculus of approximation 近似计算 | calculus of finite differences 差分演算
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calculus of approximations：近似计算
calculus 演算 | calculus of approximations 近似计算 | calculus of classes 类演算
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proximate calculation：近似计算
proxicon 近距聚焦摄像 | proximate calculation 近似计算 | proximity effect 邻近效应