Logs base e (natural logarithms) appear in the calculation of compound interest, and numerous scientific and mathematical applications.
以e为底的对数（自然对数）出现在复合计算以及大量科学和数学应用程序中。
Owing to the effects of frequent human activities and climate change, the natural annual runoff series for water resources evaluation calculation lost their consistency.
由于受频繁人类活动和气候变化的影响，用于水资源评价计算的天然年径流量序列失去了一致性。
This dissertation is one of the sub-problems of "Computer Dynamic Test and Calculation of Welding Heat-cycle", which is a project on natural science fund.
本文是自然科学基金项目“焊接热循环的计算机动态测试与计算”的一个子课题。
Owing to the effects of changing environment, such as human activities and climate, the natural annual runoff series for water resources evaluation calculation lost their consistency.
由于受人类活动、气候等外界变化环境的影响，用于水资源评价计算的天然年径流量序列失去了一致性。
Analysis the character of hydrodynamic calculation for natural circulation of industrial boiler and give the recommendation of calculation method for simple and complex circulation circuit.
分析工业锅炉自然循环的水动力计算特点，对简单及复杂循环回路的计算方法提出建议。
This article presents the calculation method for a natural circulation hot water boiler and a number of acceptable schemes for the conversion of a steam boiler into a hot water boiler.
本文提出了自然循环热水锅炉的计算方法以及由蒸汽锅炉改造成热水锅炉的一些正确方案。
This paper presents a computer simulation to investigate the speciation of aluminum in acidic natural waters equilibria with mineral kaolinite based on the chemical equilibrium calculation.
基于热力学平衡计算，用计算机模拟研究了与高岭石固相平衡的酸性天然地表水中铝的形态分布，讨论了影响铝形态分布的各种因素。
Through the discussion of computing formula for measuring high resistance by Mdoel NG82-1impact corrent galvanometer, it is discoverde that it is much casier to do calculation by natural logarithm.
通过对NG82-1型冲击电流计测高阻计算公式的讨论，找到用自然对数计算较为方便。
The applicability of converting from manufactured gas to natural gas-air mixture is analyzed through calculation and gas appliance test.
通过计算与燃具试验，分析了天然气混空气转换人工煤气的适用性。
Using reflection polarizing microscopy to compensate the natural optical activity, along the optical axis, we obtained the images of edge dislocations and compared it with the calculation.
在实验上采用反射偏光法抵消旋光后沿光轴观察获得了位错双折射象，并和计算结果进行了比较。
Calculation of MLU of all natural languages and his language samples, and MLU changes were observed in MLU with age in normal children.
计算他的语言样本中所有自然语言的MLU，观察正常儿童MLU随年龄增长的变化情况及MLU。
Bottom pressure calculation method of surpressure gas well and how to correct the pseudo-critical parameters of natural gas with high content of H_2S and CO_2 are presented in this paper.
本文介绍超高压气井井底压力的计算方法，以及如何对高含H_2S和CO_2天然气的视临界参数进行必要的校正。
Finally, natural wind speed frequency distribution and the extreme wind speed in each section have been got by statistically processing of the routine calculation results.
最后，将编程计算结果进行统计处理，得到各区段的自然风风速频率分布以及风速极值。
As known from the calculation, the natural wind speed of each section in both Niba Mountain Tunnel and Guanjiao Tunnel vary widely.
通过计算可知，泥巴山隧道及关角隧道主隧道各区段内自然风速均差异很大。
The dynamic transfer matrix can be used for calculation of exact natural frequencies and mode shapes for asymmetrical thin-walled beams and its assemblages.
动态传递矩阵可以用于计算非对称薄壁梁及其集合体的精确固有频率和模态形状。
This article deals with the calculation by computers in the way of making out the natural gas resources exploiting plan, ges distribution plan, capital and gas price evaluation, etc.
文章介绍了电子计算机在编制气源的开发方案、编制供气计划、估算成本及气价等方面的计算工作。
Principles of natural ventilation are described. Calculation method of air volume of pump house is illustrated. Measures to use natural ventilation are presented.
介绍了自然通风原理，用实例说明了泵房自然通风量的计算方法，同时通过定性与定量的分析提出了泵房合理利用自然通风的措施。
Accurate calculation of the stator natural frequencies and harmonic response of an electrical machine is essential to the prediction of acoustic noise and vibration.
预测电机的振动和噪声需准确计算电机定子结构的固有频率及定子的响应特性。
Matrix step is low by using the finite element transfer matrix method. Natural frequency by calculation approaches to actual natural frequency and the error is allowable.
用有限元传递矩阵法分析火炮身管固有振动特性，矩阵阶次低，计算所得的固有频率与实际固有频率接近，误差在允许的范围内。
This paper gives two kinds of calculation methods of natural frequency of a mass-even elliptic column which oscillates in miniamplitude on a plane, obtains two formulas of natural frequency.
本文给出了匀质椭圆柱体在平面上作无滑动的微幅摆动之固有频率的两种计算方法，得到两个固有频率的计算公式。
Based on calculation of reserves value with cost method, this paper firstly proposes value evaluation model for natural gas reserves (composite model of surplus profit).
在成本法计算储量价值的基础上，首次提出了天然气的储量价值评估模型(超额收益综合模型)。
Expounding the green GDP is the green calculation system that considers the environmental pollution and the natural resource consumption cost.
论述了绿色GDP是考虑环境污染与自然资源消耗成本的绿色核算体系。
The hydraulic calculation of vent line is an interesting but difficult problem in natural gas gathering engineering design.
放空管路水力计算是天然气集输工程设计中一个令人极感兴趣、却又常常使人困惑的问题。
Moreover, the calculation process of the theoretical natural heave period was analyzed, and the influence on the heave motion of the caisson with different drafts was studied.
同时，分析了理论垂荡固有周期值的计算过程，并研究了不同吃水对气浮沉箱垂荡运动特性的影响。
The derived dynamic transfer matrix can be used for calculation of the exact natural frequencies and mode shapes for thin-walled beams and structures approximated as composed of thin-walled beams.
动态传递矩阵可以用于计算薄壁梁集合体的精确固有频率和模态形状。
According to the general pattern of ground water lowering, this paper suggested a volume calculation method in the natural river courses in the freezing period.
根据地下水退水的一般规律，提出了针对天然河道封冻期流量推求方法的建议。
The calculation of natural gas flowrate with a programmable calculator can reduce human errors from consulting tables and calculation and its operation is very convenient.
用程序计算器进行天然气流量计算，可减少人为的查表和计算误差，操作也十分简便。
The calculation of natural gas flowrate with a programmable calculator can reduce human errors from consulting tables and calculation and its operation is very convenient.
用程序计算器进行天然气流量计算，可减少人为的查表和计算误差，操作也十分简便。
应用推荐