查询词典 function field

To give the definition of the mass concrete and to concrete\'s cracks together with practical meanings of control ,and give a brief review on the research in the field at home and abroad, at last, methods to control temperature crack of the mass concrete from several aspects such as design measures,concrets material, construction schedules.etc are summed up; To explain the physical mechanics of the concrete and computing methods-Difference Method and Finite Element Method, and illustrate the application of their specific methods repectively;Several temperature factors that can influence the temperature stress of mass concrete baseplate are analyzed. The influence degree of temperature factor can be got through the ANSYS simulation computation the control of temperature can control the temperature stress, consequently control the temperature crack of mass concert baseplate; through the influence of the crack resistance ability of mass concrete baseplate which takes the reinforcement as a part is analyzed. By ANSYS simulation, the best suited volume ratio of reinforcement is found out, at same time the layout of reinforcement with the same volume ratio can also affect the resistance ability of mass concrete baseplate. Sum up of above analysis, anti-crack function of steel bar in early mass concrete baseplate is obvious, so it\'s necessary to consider beneficial effect of construction steel bar in research of temperature control on mass concrete baseplate.

本文先容了大体积混凝土及混凝土裂缝的基本概念，对国内外在这个领域里的研究现状作了扼要叙述，并从结构设计、混凝土材质、施工措施等方面总结了大体积混凝土温度裂缝控制的方法及防止措施；阐述了混凝土的基本物理力学性能，总结了大体积混凝土温度计算的方法——差分法和有限元法，并分别举例说明其具体应用的方法；分析了影响大体积混凝土底板温度应力的几种温度因素，利用ANSYS模拟计算，得出了每种因素的影响程度，通过分析提出了在这几种温度影响因素下如何通过控制温度以达到控制温度应力从而来控制裂缝的具体建议；针对大体积混凝土基础底板中配筋的不同对混凝土底板抗裂能力的影响不同，利用ANSYS进行模拟分析，得出底板中最合适的体积配筋率，同时分析了在相同体积配筋率下钢筋的具体布置对大体积混凝土基础底板抗裂能力的影响，分析表明，配置钢筋对混凝土结构的开裂阻止作用明显，在研究大体积混凝土温度裂缝题目时，要考虑钢筋在其中的有利作用。

For example, karst topography is very approach this mode. We not only discuss the effect relation of dipole field in the mediator, but also in the property of antenna. Imaginaries Bessel function is involved in the process of discussion. because it is very important to the result.

钻孔雷达一般使用偶极天线，所以对偶极天线辐射场正反演问题的研究是目前的当务之急，它直接影响着对钻孔雷达资料的正确解释，对进一步研究钻孔雷达天线的有关特性及钻孔雷达的研制起着非常关键的作用。

This method was based on rotation formula of the current magnetic field and the magnetic fields can be expressed by a double integration about spatial radial coordinate and spatial wave number of Bessel function.

由电流磁场的旋度公式出发，推导了多层介质中点电流源磁场的表达式，其为一个关于空间径向坐标和贝塞尔函数空间波数的二重积分。

Therefore, it has significance to optimize the demodulation curve. By the use of expansion of Bessel function and optical field overlapping method, the relation between the demodulation curve and the resonant frequency deviation was analyzed.

利用贝塞尔函数展开和光波场叠加的方法分析了谐振式光纤陀螺调相检测系统解调输出信号与谐振频率偏差之间的关系，系统采用的是带有铌酸锂相位调制器的相位谱检测技术。

As to the Boolean Function in binary field, We studied its Non-linearity, Linearity Structure, Output Bit Independence Criterion, Balance, Completeness, Strict Avalanche Criterion, Propagation Criterion, Correlation Immunity, Linear Approximation Table and XOR Distribution Table .

对于二元域上的布尔函数主要讨论了其非线性性、线性结构、比特独立准则、平衡性、完整性、雪崩准则、传播准则、相关免疫性、线性分布表及异或分布表等特性。

Using the formula about the magnetic flux density induced by coil which deduced by Biot-Savart law,this paper deduces the formula about random point's magnetic flux density of hollow column solenoid and deduces the formulas about axial specific magnetic force and radial specific magnetic force by using the field gradient expression of binary function and the expression of specific magnetic force .

利用二元函数的梯度公式及比磁力公式可以得到磁性颗粒在厚壁圆环线圈所产生的磁场任意点的比磁力的轴向分量和径向分量。

Positive high voltage prick electrostatic field whit different intensity function to the process of budding of soybean seed,measured Germination potential and Sprout ratio respectively at the second and third day of the bourgeon,measured dry weight of sprouts after drying;and Amylase activity measured by colorimetric method.

采用不同强度的正高压芒刺静电场作用于萌发过程中的大豆种子，在种子萌发的第2天和第3天分别测量其发芽数和芽长，烘干后称量芽干重，计算了其发芽势及发芽率，并用比色法测定了淀粉酶活力。

By all appearances, if these theories could not explain the determination mechanism of interest rate in yield field and the function mechanism of interest rate influencing economy development, then the validity of interest rate policies working out according to these theories was very dubitable .

显然，如果我们不清楚利率在生产领域中的决定机制及利率对生产领域进而对经济发展的作用机理的话，那么依据这样的理论而制定的利率政策的有效性就非常值得怀疑的了。

The finite element soft ware on this basis has the function of grinding units, calculating the stress of every unit knot and the displacement of deformation after digging wall rocks, and simulating the graph of deformation and stress field distribution and stress flow thus providing a feasible method for designing, digging and protecting tunnel.

基于有限元法开发的有限元软件具有划分有限元网格、计算隧洞围岩在开挖后的有限元各节点应力大小和变形位移、模拟围岩变形图、应力场分布和应力的流动等功能，为设计、开挖和维护隧洞提供了可行性方法。

In this thesis, with special concerns focused on the effects on the EPI by field in the non-equilibrium transport through a single-molecular quantum dot, non-equilibrium Green function technique and canonical transformation method under the adiabatic approximation for the local electron-phonon system have been applied.

在对哈密顿量进行有效等价的基础上，采用非平衡格林函数方法处理外加偏压所导致的非平衡输运，系统地研究了耦合在两电极间的量子点。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。