模数的

Based on the modal superposition method and the exact solution of beam nature vibration, the motion equations of the simply supported and continuo...

基于模态叠加法和梁固有振动的精确解，建立了移动荷载作用下简支梁和连续梁的运动方程；利用样条最小二乘法逼近桥梁应变响应，由样条数值微分求得响应导数；再通过Tikhonov正则化方法结合奇异值分解技术得到了荷载识别的正则解。

He proved that:if the total moving times of mesh M is a finite number and independent ofΔt andh.the L2-norm error estimate is optimal;if Mh is independent ofΔt and bounded,energy norm error estimate is optimal.

并证明了当网格变动次数M是不依赖于Δt和h的有限数时，近似解与真解的L2误差估计是最优的；当Mh不依赖于Δt且有界时，能量模误差估计最优。

Firstly, this paper analyzes the forces acting on hydrobomb's body and empennage respectively. Then the mathematical model of hydrobomb's trajectory in seawater is discussed. Secondly, the simulation program is completed with Matlab.

分析了空投水雷水下无动力运动过程中雷体和尾翼的受力情况，并在运动受力分析的基础上给出了研究其水下散布的数学基础－水下无动力运动弹道仿真数模。

A left null factor of derivative matrix is introduced, and the sliding surface and the control's parameterization can be obtained by sloving strict LMI.

引入导数矩阵的左零因子，使得滑模曲面及控制器参数的求解可经过求解严格线性矩阵不等式获得，在一定程度上简化了LMI方法在奇异系统变结构控制器设计计算中的计算复杂性。

Company's main products are: electrical, electronics, electric mode, the number of electricity, electric drive, machine tools, electrical and mechanical, digital language learning system; Dianhuajiaoshi multimedia computer multimedia teaching network equipment and home appliances comprehensive experimental physiology of complete sets of equipment; full transparency car Teaching model vehicle driving simulator, such as seven series over 100 varieties, it is the technical schools, tertiary institutions necessary laboratory products, products on the market has been well received by the education departments, schools welcome, The products of the enterprises have become the preferred products science and education sector.

公司主要产品为：电工、电子、模电、数电、电力拖动、机床、机电、数字语言学习系统；多媒体电化教室；计算机多媒体教学网；家电综合实验设备及生理化成套设备；全透明汽车教学模型；汽车驾驶模拟器，等七大系列一百多个品种、它是职技校、大专院校的实验室必备之产品，产品投放市场以来，深受教育部门、各类学校的欢迎，本企业的产品已成为科教界首选产品。

Used for flexible patch cord connection of fiber circuits, provides multi-mode, single-mode, FC, SC, LC, ST and MT-RJ connectors; the adaptor porcelain terminal surface includes PC/UPC/APC; any length can be selected and the number of cores, length, physical structure, etc of patch cord and tail fiber can be independently selected by customers.

用于光纤线路的灵活的跳接，提供多模、单模、FC、SC、LC、ST、MT-RJ等连接头，适配器陶瓷端面类型有PC/UPC/APC，长度任选，跳线及尾纤的芯数、长度、物理结构等也均可由客户自主选择。

The multi-degree-freedom equivalent model of INS bracket is also given and analyzed to improve the analysis precision. The dynamic response spectrum of this model is achieved by modal analysis and spectrum theory. The numeric formulas of time-domain response are deduced by residue theorem.

对于惯导减振支架的多自由度系统等效分析模型，则运用模态叠加法和谱分析理论得到响应的功率谱，根据留数定理推导了系统时域加速度动力响应的数值计算公式。

The results of the mathematic models have not only verified the results of the field observation but also discovered that the worst situation occurred when cargos were placed only on the stacking yards behind the wharfs, which was the main cause for shore-slope deformation and the relative displacement of bearing platforms of the wharfs.

数模计算结果除验证了原型观测的结果以外，还发现仅在后方堆场堆载工况为最危险情况，是造成岸坡变形和后方承台构件相对错位的主要原因。

Geometric continuity is less strict than mathematical continuity. G0 and C0 are equivalent, that is, the segments are positionally continuous. G1 implies that the tangent vectors are equal in direction, but not magnitude. G2 implies the curvature is the same, but the second derivatives are not.

几何连续性没有数学连续性严格。G0 和 C0 的意思相同，即段在位置上连续。G1 意味着切向矢量的方向相同，但模量不同。G2 意味着曲率相同，但二阶导数不同。

Geometric continuity is less strict than mathematical continuity. G0 and C0 are equialent, that is, the segments are positionally continuous. G1 implies that the tangent ectors are equal in direction, but not magnitude. G2 implies the curature is the same, but the second deriaties are not.

几何连续性没有数学连续性严格。G0 和 C0 的意思相同，即段在位置上连续。G1 意味着切向矢量的方向相同，但模量不同。G2 意味着曲率相同，但二阶导数不同。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。