查询词典 direct method

At last a direct numerical integration method is applied to computing the integration, and in this process continued fraction expansion was used to speed up integral summation.

在此过程中通过连分式展开加快积分求和的收敛速度。

The application of the lattice Boltzmann method in unsteady open channel flows was studied in detail in the paper. An existing lattice BGK model was mended; For the problem of negative local equilibrium and evolutionary distribution, we proposed a lattice Boltzmann model based on cell-population equilibrium, which is a direct non-negative approximation to the continuous Maxwell distribution. The model reduces the transport and collision, two basic evolution steps in the LB model, to transport of the non-equilibrium distribution.

本文系统的研究了格子Boltzmann 方法在明渠非恒定流中的应用问题，改进了一个现有的LB 模型，数值实验表明此改进是有效的；在平衡态分布函数及分布函数的非负性问题上，作者提出了一个基于单元均衡的格子Boltzmann 模型，通过直接对Maxwell 分布函数的离散化实现对速度分布函数的非负离散，这种方法将传统模型演化过程中的碰撞和输运两个步骤直接表现为粒子的输运。

In view of the tedious and mistakable manual calculation in measuring Gauss projection,coordinate zone transformation and meridian convergence,an itera-tive approximation method is adopted and programmed by BASIC to imple-ment the direct and converse calculation of Gauss projection and computer cal-culation of meridian convergence angle.

针对测量工作中人工进行高斯投影、坐标换带和平面子午线收敛角计算非常麻烦又容易出错的问题，采用迭代法趋近求值，用BASIC语言编制了相应的计算机程序，实现了上述计算。

In order to obtain the best synthesis temperature of cordierite by the method of direct sintering, samples were synthesized with pressed raw blocks respectively at controlled temperatures of 1310℃,1350℃ and 1400℃.

为了研究采用直接烧结法合成堇青石的最佳合成温度，对压成的生料块分别在最高合成温度为1300℃，1350℃，1400℃下进行合成，通过对比不同合成温度下得到的样品X射线衍射图，确定出采用直接烧结法合成堇青石的最佳合成温度。

Based on the demands of two limit states,the design control equations of cross section for prestressed concrete beam are derived and the direct design method is presented.

根据两类极限状态的基本要求，建立了预应力混凝土梁截面设计的控制方程，提出了直接设计方法。

Direct measurement of loss is Zero cross point comparative method.

目前绝缘介损检测方法有以过零比较法为代表的直接测量法和以傅立叶变换为代表的信号重建法。

The most effective method of damping the oscillation is to install power system stabilizer and direct current modulation. But PSS designed to a certain mode will produce bad effect to other modes.

抑制低频振荡最有效的方法是装设电力系统稳定器和直流附加控制器，但针对某一振荡模式而设计的PSS会对其它模式产生负作用而破坏系统稳定性。

Meanwhile, taking the mutual shading effect of the neighboring spans into account, the direct solar radiation of arc vault of both east-west and south-north oriented multi-span greenhouse at noon on the day of winter solstice was calculated using the curvilinear integral method.

对东西走向和南北走向的华东型连栋塑料温室采用曲线积分的方法，在考虑相互遮荫的情况下，模拟计算了在冬至日正午时各种拱顶切角双圆弧屋面的采光性能。

In this paper,a new method on direct assay of oil's fluorescence in oil cutting s was suggested according to the characteristic of oil cutting s.

针对含油岩屑的特点提出了一种直接对含油岩屑中油组分进行荧光测量的方法。

With this method, the reliability to direct the constraint graph is increased, the computation complexity is reduced, and the cyclic constraint graph can be solved expediently.

应用此方法，可提高约束图有向化的可靠性、降低计算复杂度，且能方便地求解带有循环约束的约束图。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。