查询词典 element

If the number of the second kind of damping element is comparatively less than the number of the whole structure element, its calculating efficiency will be higher.

据此，对这类结构作者编制了空间动力时程线弹性分析程序，验证分析程序的可靠性之后，对这类结构在地震波的作用下，按实际阻尼比、等效阻尼比、单一阻尼比等情况进行了三维弹性动力时程计算，分析在不同情况下的反应差别，比较三者的差异发现后两者计算结果用于设计或者造成浪费或者造成不安全，最后提出在设计中应该注意的问题及建议。

However,authors still do not find the relevant references on convergence and symmetric problems of the semi-analytical solution.Based on the semi-analytical solution for Hamilton canonical equation theory,the formulations of the clamp and simply supported and symmetric boundary conditions on the Hamiltonian element are derived by the variational principle.Several numerical examples show that with increase of meshes,the convergence rate of the semi-analytical solution is faster than the convergent rate of traditional finite element method based on displacement.

①在厚度上没有任何位移和应力模式的假设，由于传递矩阵方法的引入，从理论上讲，不受板壳厚度或层合板壳层数的限制；②采用弹性力学的Hamilton正则方程半解析法，可以克服边界的局部化效应[8]；③由于在平面内或圆柱壳的曲面内采用了有限元法，所以一般的板壳问题不受结构侧面边界条件的限制，在复杂工程板壳问题上具有广泛的应用领域。

Through the noise analysis between circular oscillators composed of general differential amplifer element and of capacitive coupling differential amplifier element, it is found that the later,due to its band-pass and dynatron characteristics,provides a better anti-noise performance,which can be used in VCO circuits having a high requirement on frequency stability.

通过对采用由普通差分放大器单元和容性耦合差分放大器单元构成的环行振荡器的噪声分析得出，由容性耦合差分放大器单元构成的环行振荡器，因其带通特性和负阻特性而具有较好的抗噪声能力，可用于对频率稳定度有较高要求的VCO等电路中。

BFEPP has a designed productive capacity of 30,000 standard tons each year, a production level well ahead of its domestic counterparts. Now BFEPP has 11 lines of products, including amylase765, basified protease2709, neutral protease1398, acid protease, pullulanase, cellulase, pectinase, carbohydrase,β-glucans, biological pesticide, intermediate-temperature amylase element and high-temperature amylase element.

该厂是北京市认定的高新技术企业，年设计生产能力为30000标吨，现在形成12大系列产品，其中包括：淀粉酶765、碱性蛋白酶2709、中性蛋白酶1398、酸性蛋白酶、异淀粉酶、纤维素酶、果胶酶、糖化酶、β-葡聚糖酶、高温淀粉酶、淀粉糖和。

Then the boundary element integral equation of interior and exterior form is deduced in detail, also the form with corner coefficient. The significance for numerical calculation and principle of the singular integral is analyzed, and a non-isoparametric transformation method is presented to calculate weak singular integral and Cauchy integral, the method presented provides us a very simple way to computer the two kinds of singular integral of Helmholtz boundary integral equation, and it is easy to program in computer. After the difficulty of the calculation for multi-frequency of Helmholtz boundary element is explained, a method named SECHIEF (Series Expansion Combined Helmholtz Integral Equation Formulation), which is focused on the computational efficiency, is presented.

对结构声辐射的边界积分方程的内部形式与外部形式进行了详细的推导，给出了角点系数的计算方法与边界积分方程的形式，在此基础上，分析了奇异积分产生的原理及其对数值计算的重要性，提出了一种计算奇异积分的非等参(来源：Ae8a8BC论文网www.abclunwen.com)单元的变换方法，该方法给Helmholtz 声学边界积分方程中的弱奇异积分与Cauchy 奇异积分的计算以及编程提供了极大便利。

The IOA model is used to analyze iron element metabolize in Sangang Eco-Industrial Park, according to the meaning of evaluating index, industrial chain related with iron element is constructed, and also the optimized industrial symbiosis network is proposed.

将IOA模型应用于三钢生态工业园区的铁素代谢分析，根据评估指标意义，构建了与铁素相关的产业链，从而提出优化产生共生网络系统的方向。

The system consists of four parts such as Data Management of Product Model,Finite Element Analysis, Optimal Design and Graphics Drawing; and its main work is searching for an optimal scheme of chief axis with Sequential Quadratic Programming Method by finite element static and dynamic characteristical analysis of the axis and saving the results of design as documents or outputing them.

系统出产品模型数据管理、有限元分析、优化设计和图形绘制四部分组成。通过对车床主轴二维垂直剖面力学模型的有限元静、动态特性分析，采用序列二次规划的优化设计方法寻求主轴设计的优化方案，并将优化设计结果形成文档或输出。提出产品设计模型的概念，通过它可自动生成有限元分析模型、优化设计模型和图形模型三个子模型，将有限元分析、优化设计、图形绘制三部分结合在一起。

The results of two experimental tests showed that: the optimum application dosage of chinaberry element biological compound fertilizer to the corn is 1 500 kg per hectare; With the same content of nitrogen, phosphorus, and potassium, chinaberry element biological compound fertilizer has the effect not quite obvious to increase production compared to the general ternary fertilizer and formula fertilizer, but the application of fertilizer can increase the resistance to diseases and pests of corn, degradation of toxic substances such as pesticide residues and heavy metals.

试验结果表明，玉米施用楝素生物复合肥，每公顷1 500 kg为最佳施用量；在同样氮、磷、钾含量的情况下，楝素生物复合肥同常规三元肥、配方肥相比有一定增产效果，但效果不十分明显，不过施用复合肥能提高玉米的抗病虫能力、降解农药残留和重金属等有毒物质，是生产绿色玉米的理想肥料。

In analyzing the symmetrical element features of power system, the definition of circulator element and circulator node is developed.

通过对相分量法短路故障处理的分析，以定长度向量方程的多态相分量法为基础，提出了用于处理电力系统短路故障的残量变换法和残压变换法。

The some basic methods in composite mechanics are introduced,and relative formulations are derived.Maximum stress criterion,Maximum strain criterion,Hill criterion and Cai-Wu criterion are showed.The solid model of level-stability-panel is built by CATIA software,its finite element model by PATRAN/NASTRAN software.Through finite element analysis,the stresses and displacements of level-stability-panel are obtained.In order to analyze the strength of asingle part of level-stability-panel,the software CLOP is developed.The process of taking the data from NASTRAN's results and importing them to CLOP is showed.The strength of back wall of lev el-stability-panel is calculated by CLOP.

论文叙述了复合材料力学分析的基本方法，并推导了相应的计算公式，给出了几种常用的强度准则；利用CATIA软件对某型直升机的平尾进行实体建模，然后在PATRAN/NASTRAN软件中读入该模型，形成了有限元分析模型，并进行有限元分析，获得了平尾的应力云图和位移云图；为了对平尾的局部复合材料结构进行强度分析，开发了CLOP程序；从平尾结构中取出后樯作为强度分析的对象，表示了从NASTRAN分析的结果到CLOP程序输入的方法，计算出了后樯的强度数据。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。