查询词典 parallel bars

Because the normalization rules of monoid algebra system can reduce the size of query spaces effectively and BSP model is an accurate predicable performance model, two-phase parallel query optimization model is proposed. For the increasing of large and complicated data applications, the parallel implementation technologies of large objects are investigated too.

对互联水火系统短期交换计划与调度，提出的分解式逐次寻优搜索法，解决了含有复杂梯级电站和混合发电系统的多区域交换计划优化和水电调度问题，为多区域水火互联系统计划调度提供了一种有效的手段。

Based on NewGA, the thesis proposes a multigroup parallel genetic algorithm with simulated annealing method , then combines MPGASA with BPNN. According to whether simulated anealing method is used or not, two parallel genetic neural networks are implemented respectively. Results show that PGANN_SA is superior to PGANN and NewGANN.

在NewGA的基础上首次提出一种基于模拟退火机制的多种群并行遗传算法MPGASA，将MPGASA与神经网络相结合，按照是否采用模拟退火机制接受新个体分别实现了两种并行遗传神经网络PGANN_SA和PGANN，计算结果表明采用模拟退火机制有利于改善遗传神经网络的性能。

And the numerical results of parallel algorithm showed that the parallel computing approach is effective and efficient.

而并行算法的加速比和效率实验结果表明本文的两种并行算法也具有很好的加速性能。

The analytical equations of workspace boundary surfaces for the octahedron parallel machine tool and the new type of parallel machine tool are derived based on the forward displacement analysis. Based on it, the projection graphs of workspace boundary surfaces are drawn.

提出了并联机床工作空间分析的解析方法，得到了八面体并联机床和新型并联机床的工作空间边界曲面的解析方程，并在此基础上绘出了工作空间边界曲面的图形。

Bi-conversion UPSs operate in serial regulating work mode, on-line interactive UPSs in parallel regulating work mode, and DP300E circuits in serial-parallel regulating work mode which improve the performance of single-conversion and bi-conversion UPSs, and make themselves of high efficiency, stability and reliability.

双变换UPS工作于串联调整工作模式，在线互动式UPS工作于并联调整模式，而DP300E的电路则工作于串、并联联合调整的模式，提高了双变换和单变换UPS的性能，使之具有很高的效率、稳定性及可靠性。

It was designed to permit the development of parallel software libraries, and provide access to advanced parallel hardware.

它是目前发展较快、使用面较广的一个公共的消息传递库，是在现有机器的软硬件通信基础上，实现了并行应用程序中各个并行任务之间的相互通信、协调和同步功能，并对这些并行任务进行管理。

A leading output power factor angle of parallel inverter is required after analyzing the work state of parallel inverter .

在分析并联型逆变器工作状态的基础上，确定并联型逆变器应具有超前的功率因数角。

Further theoretical analysis indicate that, the morphology of twin-crystals show straight parallel stripes, and the morphology of stacking-faults often show parallel stripes with an angle of 60° or 120°.

进一步的理论分析表明，孪晶的形貌表现为平行条纹，而层错则通常为带有60°或120°折角的条纹。

A multiple-step beams model was established to analyze the static stiffness characteristics of the double parallel four-bar mechanism with right angle flexible hinges based on the symmetry of the structure. Formula for calculating the static stiffness was derived by applying singularity function. On the basis of this analysis, the factors influencing the stiffness performance of the double parallel four-bar mechanism were studied from its geometric parameters, and the theoretical model was verified by finite element method.

根据其结构的对称性建立了静刚度分析的阶梯梁模型，引入奇异函数法推导了柔性双平行四杆机构的静刚度计算公式，在此基础上，分析了柔性双平行四杆机构各尺寸参数对其静刚度的影响，并采用有限元方法对理论模型进行了验证。

They require well collimated light beam. For this, we introduced collimator. The collimator is used for collimating emanative Gaussian beam to obtain almost parallel beam with small emanative angle, or focusing parallel beam into fiber.

在光隔离器、光环形器、光开关、光衰减器、光波分复用器等光器件的工作过程中，对高斯光束的准直性要求非常高，这样就引入了光纤准直器。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。