logarithmic function
英 [ˌlɒgəˈrɪðmɪk ˈfʌŋkʃn]
美 [ˌlɑgəˈrɪðmɪk ˈfʌŋkʃn]
对数函数
双语例句
- It is shown that the pore ratio and permeability of sandstone are reduced with the increasing of confining pressures conforming to the rule of logarithmic function.
研究表明，砂岩的孔隙度和渗透率均随侧压的增大而减小，且服从对数函数变化规律。 - We firstly discuss the properties of the argument function and the single-valued analytical branch of logarithmic function.
首先研究了辐角函数的一些性质，进而对对数函数的多值性进行了分析，最后讨论了多值函数的应用问题。 - After passage, pericyte growth is accelerated, with a growth period characterized by a logarithmic function on the third day and a flat period on the tenth day. The capitalists of our times continued vigorously to cultivate white chauvinism.
传代培养后增长速度明显加快，第3天进入对数生长期，第10天进入平台期。当代的资本家继续卖力地培养白种沙文主义。 - Backoff algorithm of MAC protocol in Ad Hoc networks based on logarithmic function
基于对数函数的adhoc网络MAC退避算法 - When the ignition was certain, the flame travel speed of gas explosion and pipeline length and diameter ration would be in a logarithmic function relationship.
在点火能量一定时，瓦斯爆炸火焰传播速度与管道长径比呈对数函数关系； - In the application of hedonic price model, it has a wide choice of function forms, including linear function, logarithmic function and semi-logarithmic function, etc.
在特征价格模型的应用中，函数形式的选择具有多样化，包括线性函数、对数函数、半对数函数等。 - The tradeoff between flow number counting accuracy and cost is made by the characteristic of the logarithmic function.
算法利用对数函数的特性，在流数量统计精度和开销之间找到了平衡； - Of, relating to, or being a logarithmic function with a normal distribution. The results of facies controlling modeling reflect distribution of favorable reservoirs and are in line with the dynamic production state.
对数正态呈正态分布的对数函数的或与其相关的相控建模的结果反映出有利储层的分布，并与生产动态相吻合。 - The logarithmic function is defined as the inverse of the exponential function.
对数函数是作为指数函数的反函数来定义的。 - Through the parameter utility function, we produced expectation utility under the logarithmic function, the linear function, the power function and negative exponent function separately, and then gave out the optimum decision with the trapezoidal integration and the dichotomy.
通过参数化效用函数，分别给出了对数函数、线性函数、幂函数以及负指数函数下的期望效用，并用梯形积分法和二分法求解使期望效用达到最大的决策值。 - The algorithm running time is a logarithmic function of the number of linkage axes.
以联动轴数作为输入考察插补速度，算法时间复杂度是对数阶的。 - The law of runoff is analyzed, the results indicate that the water lowing pattern conforms to logarithmic function.
径流规律分析结果表明，其退水过程按对数曲线规律变化。 - The mathematical models showed from the natural logarithmic function were established on the relationship between the breaking strength and the diameter of ropes for the ISO standards of PP, PE and PA ropes.
以自然对数函数对聚丙烯、聚乙烯和聚酰胺绳索产品国际标准建立了断裂强度与直径关系的数学模型。 - A logarithmic function describing the relationship between penetration depth and dynamic pressure divided by the square of nozzle number was derived by fitting the data of the computation results.
通过对模拟结果的函数拟合，发现射流喷射深度与动压比除以喷嘴数的平方之间的关系可用一个对数函数很好地描述。 - In addition, we prove the performance ratio of the convex hull insertion for the traveling salesman problem in Euclidean plane has the upper bound about a logarithmic function of the number of nodes.
另外，我们证明了凸包选边插入法的性能比有一个关于点数的对数函数上界。 - A practical circuit is constructed, and the experimental result shows that the logarithmic function for the circuit reaches 99% of the theoretical value.
搭试了一个具体电路，取得了系统特性数据，证实了该系统的对数函数准确度可达99%以上。 - Based on viscoelastic mechanical analysis of the stability of surrounding rock in circular tunnel, through the improvement to viscoelastic constrictive model, this paper cites a logarithmic function to describe the constrictive model of rock creep.
基于圆形隧道围岩稳定性的粘弹性力学分析基础之上，通过对粘弹性本构模型的改进，引用对数函数来描述岩石蠕变的本构模型。 - The RSSI is implemented using piece-wise linear logarithmic function while maintaining low voltage and low power.
在低功率、低电压条件下，RSSI实现了分段线性对数逻辑功能。 - The paper makes some analysis and discussion for establishing stage-discharge relation model, selecting 3 mathematic models: power exponential equation, logarithmic function equation and floating polynomial equation, in allusion to the problems of decided line and calculated discharge by handwork.
文章针对手工定线、推流的诸多问题，采用幂指数方程、对数函数方程、浮动多项式方程等3种数学模型对水位流量关系模型的建立进行了一些初步分析、探索。 - Based on action values, an exponential function and a logarithmic function are used to compute action rewards and discount rate dynamically, which accelerates agents to choose optimized actions.
以行动分值为基础，使用了指数函数和对数函数，动态确定奖赏值与折扣系数，加快行为者选择最优动作。 - Infiltration ratio of runoffs presented the power function relationship with the alternation of time on ecological and economic zones, but the accumulated infiltration volume of runoffs did the logarithmic function relationship with the alternation of time.
生态区和经济区土壤入渗速率随时间的变化呈幂函数关系，土壤累计渗透量与渗透时间呈对数函数关系。 - The gross payroll is calculated with the logarithmic function, both meeting the necessary demand that the distribution curve be smooth, continuous and without "break point", and keeping the existing standards of salary payment.
工资总额计算公式采用对数函数的形式，既可满足分配曲线必须平滑、连续、不出现拐点的要求，又能维持现有工资支付标准基本不变。 - The influence of determining frequency on electric properties of grain under non-uniform electric field is obviously different from that under uniform electric field. The relationship is not logarithmic function, whereas is inverse function.
测定频率对谷物电特性影响与匀强电场中的具有显著的差异，其间不是对数关系，而是反比关系。 - Chinese shanghai version and German textbooks basically have no repeated appearance of the same knowledge of power function, exponential function and logarithmic function.
上海和德国教材中幂指对函数这部分内容的同一知识点基本不会重复出现，美国教材则出现了同一教学内容的重复。 - CORDIC algorithm contain simple addition and shift operations to be completed on the trigonometric functions, exponential function and logarithmic function, such as calculation of transcendental function, and the algorithm is a rule-based algorithm, simple structure, can be easily achieved in hardware.
CORDIC算法通过简单的加法和移位操作就可以完成三角函数、指数函数和对数函数等超越函数的计算，且该算法是一种规则化的算法，结构简单，可以很容易在硬件上实现。 - In addition, the calculation of linear function, logarithmic function, a linear logarithmic function and the log-linear function of four kinds of form, the hedonic price model has the relative error, comparing the pros and cons of different methods.
此外，计算线性函数、对数函数、线性对数函数和对数线性函数四种形式下，特征价格模型存在的相对误差，比较不同方法的优劣。 - In other aspects of teaching content migration in mathematics, such as exponential function, logarithmic function and inverse function concept and image, we can borrow ideas and partially use the teaching methods of TI graphics calculator or information technology auxiliary power in this lesson. 4.
在数学其他教学内容迁移方面，如指数函数、对数函数和反函数的概念、图像等教学环节，可借鉴或局部套用本课使用TI图形计算器等信息技术辅助幂函数教学的方法或手段。 - This study has made a comparative analysis of Shanghai, German and American high school mathematical textbooks on both macroscopical and microscopic sides depended on power function, exponential function and logarithmic function.
本研究以幂函数、指数函数、对数函数为载体，对中国的上海、德国和美国的高中数学教材进行宏观和微观两个维度的比较分析。 - The exponent and exponential function are important concepts that play important roles in high school mathematical curriculum. They are closely connected with the logarithm and logarithmic function and also of great help to the learning of advanced mathematics.
幂与指数函数是高中数学课程中的重要概念，与对数、对数函数等有密切联系，对高等数学的学习也起到帮助作用。 - The deformation accords with the law of logarithmic function. ( 2).
黄土隧道变形符合对数函数规律。