用费马原理推导了透镜的物像公式.
并用齿型法线法和包络原理推导出共轭曲线数学模型。
Mathematic models of conjugate curves were deduced via enveloping theory and dentiform normal method.
应用参变量变分原理推导了复合模量在弹性及塑性状态下的解析解。
The analytical solutions of composite modulus in both elastic and plastic conditions are deduced by applying parametric variational principle.
评论了仅仅依据光速不变假设和相对性原理推导洛伦兹变换公式的方法。
The derivation methods of Lorentz transformation according to invariance of light speed and principle of relativity are commented.
本文采用球面三角形原理推导了导航定位误差与陀螺姿态误差的关系式。
The relation between the navigation errors and the attitude errors of gyro was derived by use of spherical triangle.
根据势能驻值原理推导出了稳定性计算的公式，并与现有公式进行了比较。
On the ground of the potential energy stationary value theory, the formulas for stability calculation are developed and compared with the existing formulas.
并根据材料力学原理推导了光纤光栅波长漂移量与侧向位移的线性调谐关系。
Moreover, we deduce the linear relationship between reflected wavelength shift of fiber grating and vertical displacement of cantilever beam which the fiber grating is sticked on.
本文由力学的普遍原理——虚功原理推导出了三维情况下J积分守恒的一般形式；
The general form of J-integral conservation law in three dimensions has been derived from the principle of virtual work.
利用最小势能原理推导了肋拱桥结构在外荷载作用下侧倾稳定临界力的近似解析解。
With the principle of the minimum potential energy, an analytical solution for the lateral critical bucking Lord of tied-arch Bridges is studied.
本文利用内含价值法的原理推导出企业价值增值的折现现金流量模型和经济利润模型。
This paper deduces the Discounted Cash Flow model and Economic Profit model based on the principle of inherent value method.
根据所提出的位移模式，结合虚功原理推导出组合梁剪力滞效应微分方程以及相应的边界条件。
A set of difFerential equations and the corresponding boundary conditions are derived according to virtual work principle and the longitudinal displacement patterns.
利用微分几何和啮合原理推导出该机构的点啮合的诱导曲率方程，给出了接触域大小的计算公式。
With the differential geometry and engagement theories, induced curvature formulas of point engagement were deduced, and the formula of the local contact areas was given.
根据结构分析中的虚功原理推导弹性地基梁位移计算的一般公式，介绍了连续弹性地基梁的静力分析方法。
Based on the visual work principle of structure analysis, a general formula for the displacement calculation is deduced for the static analysis of the beam on elastic foundation.
建立了双频载波相位观测模型，并将其进行无电离层延迟化简，用最小二乘原理推导了天顶湿延迟的估值公式。
The dual-frequency carrier phase observation equation is built and ionosphere-free predigested, the estimate formula of zenith wet delay is deduced with least square method.
针对纤维增强复合材料的属性特点，应用坐标系转换原理推导出通孔法测量复合材料残余应力时的应力释放系数公式。
The relieved coefficients during the measurement of the residual stresses in the fiber reinforced composites by the hole drilling method were given with conversion of the two coordinate systems.
本文阐述了用取样技术测量矢量电压的基本原理，推导了计算公式。
This paper expounds the fundamental principles of vector voltage measurement using a sampling method, and deduces the calculating formula.
根据虚位移原理，推导出基于矢量磁势的电磁力计算公式。
According to the principle of virtual-work, the formula of electromagnetic force based on magnetic vector potential is deduced.
根据激光扫描平移加旋转法的测量原理，推导出了非球面光学零件面形测量的数学模型；
The mathematical model of the surface shape measurement of aspherical optical components is built up according to the laser scanning measurement principle by the translation & rotation method.
介绍了声学测温的基本原理，推导了声波传播速度与介质温度的关系式，阐述了声学测温的巨大优势和存在问题。
The main principle is introduced, and the relationship between speed of sonic wave and media temperature is deduced. The great merits and existing questions of acoustic pyrometry are shown.
根据几何光学原理，推导出转镜-振镜扫描系统物镜前振镜上光斑移动速度的解析表达式。
An analytical expression for spot moving speed on the former vibrating mirror of the polygonal mirror scanning system objective is derived from geometrical optical principle.
应用哈密顿原理，推导出均匀杆的纵振动方程与横振动方程。
The longitudinal and transverse vibrating equations of the homogeneous rod are deduced with Hamiltonian principle.
方法利用投入产出原理，推导出热采稠油油藏的经济可采储量的计算方法。
Method Deduce economical recoverable reserve of heavy oil reservoir under thermal production with the principle of investment vs. returns.
本文从平衡滤光片的原理，推导了金属片型和塑料氧化物型平衡滤光片的最佳厚度计算公式。
The precise formulas, for calculating thickness of X-ray balanced filters made from metal foils or oxide-plastic films are deduced from the principle.
分析了控制策略的原理，推导出相关运算公式，给出了详细的控制框图。
The principle of control strategy is analyzed, relevant formulas are deduced, and detailed control block diagrams are provided.
研究了3-3矩阵变换器（MC）基于直接传递函数法控制的原理，推导出了基于直接传递函数调制的矩阵变换器的控制过程。
The principle of 3-3 matrix converter(MC) based on direct transfer function control is studied and the control process of the matrix converter based on this control is deduced.
摘要根据熔融纺丝的基本原理，推导了扁平纤维的动力学模型。
According to the basic principle of melt - spinning, the dynamic model of flat fiber was deduced in detail.
根据能量原理，推导出了一个求解等效总体损伤张量的公式，适用于多个损伤张量求和。
A formula to solve the equivalent global damage tensor by summing up the damage tensors of individual joint sets is derived based on the energy principle.
利用能量变分原理，推导出平面曲线箱梁的基本微分方程、边界条件；
On the basis of the energy-variational principle, the differential equations and boundary conditions of curved box girder are derived.
利用能量变分原理，推导出平面曲线箱梁的基本微分方程、边界条件；
On the basis of the energy-variational principle, the differential equations and boundary conditions of curved box girder are derived.
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