结构的

Compared with the approximate calculation method, the results show that the average prediction accuracy of the method based on the thermodynamic theory can be improved by 0.044nm.

用改进后的方法对12个蛋白质进行了测试，预测结构相对于天然结构的均方根偏差在0.4～0.6 nm之间。

After the assuredness of the dopant and the depth of the layers, associating the chief technology directive, the structural parameters of the device are obtained and theoretically checked.

确定了各层结构的掺杂浓度和厚度后，结合主要技术指标得出了器件的结构参数，并对主要参数进行了理论核算。

CCHMDOC is a cooperative authoring system based on peer-to-peer architecture.

在基于客户/服务器结构的系统WWWDOC中，为了解决WWW文档的协同写作和文档连贯性问题，在WWW文档上扩充了一个层次式结构包装。

Based on the analysis of the mechanism of robot manipulators, a trajectory tracking controlling research model is first built up with ADAMS, and its mathematical model is formulated through the study of robot kinematics and dynamics. After the modeling errors are analyzed in practical robotic systems, a conception of centralized error is brought forward according to the theory of weighting functions. In the case of modeling errors' exist, the robotic uncertain model is derived by introducing an auxiliary control variable into inverse dynamic analysis. The control strategy of robust exponential convergence is applied to the robotic uncertain model, the applicable conditions and the applicable controller with this application are presented. The stable control effect under three main model uncertainties (parametric errors, joint disturbs, joint frictions) are systematically studied on the previously built research model. The problems of robust exponential convergence controller which often results in unstable output and so produces a large relative error when the input trajectory is in a small range are resolved by adjusting the control parameters based on the controller's structure.

本文在机械手的机械结构分析基础上，利用ADAMS建立了用于机械手轨线跟踪控制研究的机械手模型；通过对机器人运动学和动力学问题的研究，建立了机械手研究的数学模型；分析了机器人系统中模型误差的主要来源，根据加权函数法分析，提出了模型集中误差的概念；在存有模型误差的情况下，采用逆动力学结构并引入辅助控制量，由机器人误差模型推导了机器人非确定性模型；提出了采用鲁棒指数收敛法对上述机器人非确定性模型进行鲁棒镇定的控制策略，并给出了对机器人进行鲁棒指数收敛控制时系统不确定因素应满足的匹配条件；针对机械手研究模型，深入研究了鲁棒指数收敛控制器对机器人系统中常见的模型参数误差、关节扰动、关节摩擦等不确定因素的镇定控制效果；针对鲁棒指数收敛控制器易产生控制量振荡的问题以及在小范围内系统轨线跟踪的稳态误差过大问题，本文分别提出了基于控制器结构的控制参数调整法和基于轨线跟踪范围大小的控制参数分段切换法。

A new type of on-line dynamic balancing system for the rotor is proposed, whose creativity lies in the design of balancing head and control method.

研制了一种新型结构的转子在线自动平衡系统，提出了全新的平衡头结构和控制方法。

This theory can be used to find the bifurcation point on the equilibrium path and obtain the critical load and critical mode.

采用了塑性增量理论来决定结构的塑性应力状态，避免了结构反应对加载路径强烈的依赖性。

This algorithm is simple and efficient because the boundary line and connecting property of the structure are applied.

由于利用了结构的边界线段和结构图的连通性等特点，使得算法既简单又有效。

From now on, Ma steel's H beam has become the leader brand in China.

为优化我国钢铁产品的结构和促进相关产业结构的升级换代发展提供了一个范例。

We know that, with the exception of butterfly valve and the valve is completely symmetrical in structure, all other structures are asymmetric valve.

我们知道，目前除了蝶阀和隔膜阀在结构上完全对称外，所有其他结构的调节阀都是不对称的。

The venture capital is the High-tech enterprise growth and the scientific and technical payoffs industrial production important force, can promote the industrial structure and the economic structure adjustment, the perfect enterprise financing system, the optimized capital disposition, increases the national wealth.

风险投资是高科技企业成长和科技成果产业化的重要力量，能够促进产业结构和经济结构的调整，完善企业融资体系，优化资本配置，增加国民财富。

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。