牛顿说他已放弃了微元或无穷小量。
Newton says he has abandoned the infinitesimal or infinitely small quantity.
相应的质量微元，就告诉了我们，区域点的权重。
Because this would correspond to the mass element telling us how to weight the various points of our region.
我们计算的是，整个区域的面积微元dA的总和。
Really, what we are doing is summing dA over the entire region.
采用有限微元方法分析了三维编织复合材料的模量与强度。
The modulus and tension properties of 3D braid composites are predicted by finite element analysis in this paper.
目的研究微元生物活性纤维对动脉化静脉皮瓣微循环的影响。
Objective To study the effect of microelement bioactivity fiber on microcirculation of arterialized venous flap.
而造成微元体不断破裂的原因是微元体材料性质的非均匀性。
The reason that progressive failure of microelements is the uniformity of their material properties.
在推导过程中，考虑了壳体微元在中面内的变形和绕各个轴的转动。
The deformations of the element in the middle surface of the shell and its rotation about all axes are considered in the derivation of these equations.
本发明公开了一种基于热质微元液体自身微循环的气体传热传质方法。
The present invention discloses one kind of gas heat and mass transferring method based on the self micro circulation of the heat and mass micro element liquid.
根据线电流与电偶极辐射场的关系，由无限长棱边的场反推得微元的场。
According to the relation between the radiating fields of line current and dipole, the radiating fields of the edge elements are obtained by reversion from the scattering fields of the infinite edges.
同时，假设在新的时间步下，颗粒在欧拉微元里充分混合，形成新颗粒团。
Meanwhile, at new time step, particles on the Euler cell are assumed to be mixing sufficiently and come into being a new parcel.
由损伤力学理论与微元强度统计理论，得到了岩石声发射参数与损伤参量的关系。
The relationship between acoustic emission (AE) parameters and damage variable is obtained by applying the damage theory and microelement statistical strength theory.
本文用微元算法研究了熊猫光纤的结构参量对熊猫光纤双折射特性(拍长)的影响。
In this paper we study the structure of panda fibers how to effect the birefringence (beat length) by an infinitesimal element method.
该模型在考虑填充床内液体微元不连续的同时，将液体微元进行分类并对浓度平均。
While the discontinuousness of liquids in RPB is considered, calculation is much more reduced by classifying liquid elements and averaging concentration in this mathematical model.
该方法认为宏观破坏行为是由于具有弹性-脆性特征的细观微元体不断破裂造成的。
This methodconsiders that macro-failure activity is due to the progressive failure of elastic and brittle microelements.
从微元过程和宏观过程的角度，对理想气体任意准静态过程的吸、放热进行了研究。
The molar heat capacity of ideal gas and van der Waals gas in arbitrary quasi-static process;
本文研究了计算保偏光纤中应力双折射特性的微元算法，对其计算值进行了理论验证。
In this paper, we study theoretically infinitesimal element method for calculation of stress birefringence in polarization maintaining fibers.
围压则可以抑制裂纹的萌生和扩展，强化了微元体的承载能力，使得割线模量会增加。
While the confining pressure will inhibit the initiation and propagation of cracks, consolidate the carrying capacity of microelement and enhance the secant modulus of rock.
将换热器分解成若干微元，选用恰当的空泡数学模型，计算各组分在换热器中的滞留量。
Element approach is employed, and the amount of each component holdup is calculated element by element with a proper void fraction model.
本文运用损伤理论和微元强度统计理论导出了声发射参数与损伤参量及应变的关系模型。
The model about the relationship among AE parameters, damage variable and strain is derived by applying the damage theory and micro-element statistical strength theory.
从流体微元出发，用计算流体力学（CFD）的方法建立热管生物反应器的传热数学模型。
Using the fluid differential unit, the heat transfer mathematic model of heat pipe bioreactor (HPBR) was established by the calculated fluid hydrodynamics (CFD).
微元体的综合反应速率、对流速度以及反应器的长度本身是影响反应器反应类型的重要因素。
The overall rate of REV, length of reactor itself and convection all contribute remarkably to the performance of reactor.
利用旅行薄片微元体能量守恒原理，引入喂钢带相对速度参量，建立了结晶器喂钢带连铸工艺的数学模型。
A mathematical model for feeding strip steel process has been developed using energy conservation principle on traveling thin-cell and introduction of relative steel strip feeding speed.
最后利用微元法得到了射流流量随时间变化的函数关系式，并和数值模拟值进行了对比，分析了各设计参数的影响。
For the end, an equation of mass flux of jet about time deduced by the differential element method was compared to CFD results, and the influence of design parameters was analyzed.
本文的研究结果也证明了冲击过程中轴压对砂岩内部的裂纹起催生作用，弱化微元体的承载能力，导致割线模量降低；
The results also show that the axial pressure will induce the internal cracks in rock, weaken the carrying capacity of microelement and reduce the secant modulus of rock;
对于水平井井筒的稳定单相流动，提出了水平井井筒管流的“微元段”观点，从而简单实用地解决了井筒内的变质量流问题；
A "theory of micro element" and equivalent seepage flow was raised to solve the various mass flow of single phase in the horizontal wellbore.
假定软岩微元强度分布统计概率，定义软岩的统计损伤变量，依据统一强度理论建立三轴应力状态下软岩的损伤统计本构模型。
Assuming distribution statistical probability of micro-units strength, statistical damage variable is defined; and the statistical damage constitutive equation is proposed under triaxial.
利用微元段内的物料与热量平衡，对固定化酶管式热敏传慈器进行了考察，建立了用联立双曲型偏微分方程组描述的数学模型。
By means of the material and energy balances, this paper establishes a mathematical model to describe the tubular hot-sensitive sensor with immobilized enzyme.
针对在定积分应用的微元法教学过程中，就如何阐明微元法的来源、理论依据以及在实际应用中需注意的问题等进行初步的探讨。
The author makes an initial discussion on how to clarify the origin and theoretical basis of infinitesimal method during the teaching of this very method in the application of definite integral.
采用金属材料微元屈服极限随机分布模型，计算出每次循环产生的微观塑性应变，并与用单调拉伸试验确定的材料真实断裂延性联系起来。
Randomly distributed models of micro-plastic strains were used to calculate the micro-plastic deformation produced at each cycle of the steel under high cycle fatigue test.
采用金属材料微元屈服极限随机分布模型，计算出每次循环产生的微观塑性应变，并与用单调拉伸试验确定的材料真实断裂延性联系起来。
Randomly distributed models of micro-plastic strains were used to calculate the micro-plastic deformation produced at each cycle of the steel under high cycle fatigue test.
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