有效公式

Basic quantities in stellar photographic photometry (in particular, colour index and "effective wavelength") are formulated according to the assumptions that: 1 stellar radiation may be represented by some black body equivalent and 2 within the limits of a single photometric "receiver", intensity-wavelength relationship of the radiation may be taken as linear.

本文對着當前的發展，綜述了照相方法在恆星光度学中的地位。接着用兩個簡單的假设，即星体幅射的黑體近似和累積亮度範圍中的直线近似，把恆星光度学中的基本定義(如有效波長、等光波長和色指数等)和主要问题(如空間红化，亮度效应等)表以公式。

The results showed that the amount of nitrogen mineralized from the green manure added to soil was corelated with the effective cumulative temperature i.e.y=k[(T—15)D]~n in which y is the amount of nitrogen mineralized, D the number of days, T the actual temperature during incubation and k and n constants.

结果表明，在20—30℃淹水培养条件下，加入土壤中的绿肥氮矿化率与有效积温(T—15)D的关系，符合y=K[(T一15)D]~n经验公式的规律。

Based on the research progress abroad,calculation method of deflection due to short-term loads and calculation expression of effective moment of inertia for concrete beams reinforced with FRP bars were brought forward.

在国外有关成果的基础上，给出了FRP筋混凝土梁的挠度计算建议方法及&有效惯性矩&的表达式，同时提出了设计时不需进行挠度验算的最大跨高比限值的计算公式及相应的基于挠度控制的承载力设计方法，对工程应用有着实际的指导作用。

For the sake of control equilibrium pressure in the buffer effectively it, finds the semi-empirical relationship to count equilibrium pressure by experiment.

为了有效控制缓冲器的平衡压力，通过实验测试，对测试结果拟合得出计算平衡压力的半经验公式。

On this foundation the article inducts in detail the method which is based on the relative settlement of calculating unit area end support force at the same time considering the feature of pedestal pile"s "arch effect the article introduces conception of pile effective length and finally obtain the formula of calculating man-made pipe with bulb-shaped axial carrying capacity .

在此基础上论文详细归纳了以相对沉降为依据确定单位面积端承力q_b的计算方法，并考虑扩底桩的&拱效应&特点引入了有效桩长的概念，最后结合公路规范推出了比较实用的人工挖孔扩底桩轴向承载力计算公式。

The following results are got:(1) the analytical equation between the overburden pressure, the pore fluid pressure and the matrix stress is established;(2) the nonlinear relation between the porosity of saturated soils and the pore fluid pressure are obtained, which relates to the initial state and the initial pore pressure of saturated soils;(3) Based on the new principle, the rock shear strength theory and hydraulic fracturing pressure formulation are reacquired, which are much more reasonable than the traditional ones.

第二章讲述的是该有效应力原理的一些工程应用研究，通过该研究，我们取得如下成果：（1）建立了上覆岩层压力、孔隙流体压力、基岩应力之间的解析关系式；（2）推导出了饱和土体孔隙度与孔隙水压之间的非线性关系式，该关系式与多孔介质的初始状态及初始孔隙水压有关；（3）建立了基于多孔介质的岩石剪切强度理论和岩石破裂压力计算公式。

According to the principles of tooth meshing and manufacturing helicoi ds, a mathematics model is constructed to reflect the manufacture process of nut , and the formula of the grinding wheel section is developed. The parameters of the section are obtained through numeral arithmetic; moreover the parameters of the dresser are worked out. Based on these work, the solid model of the ball scr ew nut, grinding wheel and tooth dresser are developed in the Pro/E software, wh at's more, the process of the dressing...

根据螺旋面加工原理、齿形啮合原理及回转面砂轮加工螺母工艺建立了相应的数学模型，并推导出砂轮截形的计算公式；采用数值计算方法求解砂轮截形参数，进一步得到修整器靠模板的参数；在此基础上，利用Pro/E软件对大导程滚珠丝杠螺母、砂轮和砂轮修整器进行了实体建模，并对砂轮的修整过程和螺母的加工过程进行了运动仿真，有效地验证了砂轮截形的计算结果。

In NWFM,to solve self-consistently the set of DFT Kohn-Sham equations,nuclear weight function is employed for numerical solution of multicenter integra-tion,which decomposes the problem of three dimensional integration to a sum ofone-center,atomic-like integrations.

首先介绍如何利用线性组合的原子轨道方法求解密度泛函理论中的K-S方程；接着详细地说明了核权重函数的概念，并列出了两种常用的核权重函数形式，同时阐述了如何利用核权重函数求解包含多中心积分的矩阵元以及复杂的三维泊松方程以获得电子间库仑势的方法；然后给出了求解矩阵元、有效势以及体系总能的具体数值计算公式。

In the light of the relation between rock velocities and confining pressure and pore pressure, the concept and formula of effective pressure is cleared in this thesis.

本文针对岩石的弹性波速度与围限压力和孔隙压力的关系，澄清了有效压力的概念和计算公式。

According to the statistics formula between the ratio of capillary pressure to threshold pressure and the effective wetting-phase saturation established by Brooks R.H.

根据Brooks R H和Corey A T建立的毛管压力同阈压之比与有效湿相饱和度S_之间的统计公式提出一种计算平均毛管压力曲线的方法。

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。