原理

Based on the principle analysis,this paper compares the integrated absolute error value of two kinds of controllers,and this reflects the superiority of internal model controller in some way.

该文分析和比较了内模控制器和PI控制器在克服时间滞后方面原理的不同；并在分析原理的基础上，通过仿真实现了两者在绝对误差积分方面的比较，在一定程度上反映了内模控制器比PI控制器优

The model of the micro accelerometer is set up based on the design tasks and performance requirements.

具体包括以下几个方面： 1对微加速度计的工作原理及检测原理进行了分析。

Constitutive model: Based on the energy principle of fracture mechanics, energy addition theorem and statistical theory of rock-mass structure, a constitutive model of anisotropic equivalent continuum is derived.

裂隙岩体的本构理论运用断裂力学能量原理和能量可加性原理及岩体结构统计理论，导出了裂隙岩体的各向异性等效连续介质本构模型，并对柔度张量和等效应力作了讨论。

Be semmetry of interest rate structure principle and principle of quantitative structure semmetry introduce capital fund indebted combination is optimized in, controlled a bank to run medium liquidity risk and interest rate risk, protect the security of bank shareholder rights and interests, the lawful sex that assured bank assets admeasure and add up to compasses sex.

二是将利率结构对称原理和数量结构对称原理引入资产负债组合优化中，控制了银行经营中的流动性风险与利率风险，保护银行股东权益的安全，保证了银行资产配给的合法性与合规性。

Based on varying process of generator terminal parameters after excitation fault, shortages of excitation protective principle of static stability boundary and asynchronous impedance boundary are analyzed. It proposed that excitation fault research relates to large-disturbance stability. Because dynamic power-angle character of generator after excitation fault is non-sinusoidal, there are differences between dynamic power-angle character and static state power-angle character. So it isn't ideal to protective operation result based on small-disturbance stability and static stability boundary criterion. At the same time, it proposed that asynchronous boundary impedance criterion is a constant reactive power circle moving adown j Xd′. It can ensure complete loss-of-excitation generator measuring impedance enter into the circle, but can't ensure the other condition measuring impedance including impossible losing synchronism enter. So loss-of-excitation protection would be maloperation when system voltage drops short and recovers or generator rejects load.③Based on stability principle, it puts forward setting conditions and calculation method of generator loss-of-excitation protection by direct measuring power-angle.

以励磁故障后发电机端的相关参数的变化为基础，通过对以静稳定边界和异步阻抗边界作判据的两类三种现行励磁保护在原理上存在的缺陷分析，发现：励磁故障是一个大干扰稳定性问题，励磁故障后的发电机的动态功角特性与静态功角特性有很大的差异，已远非正弦曲线，因此基于小干扰稳定性原理、以静稳定边界作判据的保护必然动作不理想；异步边界阻抗判据是一个下移j Xd′的等无功阻抗圆，它可以保证完全失磁后的发电机测量阻抗能进入该阻抗圆，但不能保证完全失磁之外的其它状态不会进入该阻抗圆，因此在系统电压短时下降或发电机突然甩负荷等情况下可能启动该保护使之误动。

Based on the analysis, a new AFC system based on self-optimizing control is proposed with the experience of experts.

本文中简要分析锁相型自动频率控制系统的基本原理及其在实际应用当中遇到的问题，进而提出了一种新型的基于反射波极小值的AFC系统，并对其原理进行了深入的剖析。

The principle of alkalinity measurement and control,software and hardware design were discussed in detail.

介绍了碱度检测原理、碱度控制原理、监控系统的硬件电路设计和软件编程，并给出了应用实例。

The calculations show that the principle formula error have small influence on the aberrations of an optical system, but as the stundard measurement of a refractive index, so great principle formula error is not allowable.

这样，虽然仪器本身具有高精度的测试性能，但原理公式误差大大地超过了仪器的测试精度，导致错误的测试结果。因此指出原理公式误差，评价其大小，重新推导测量绝对

Entropy increase principle in isolated system, which is deduced from the discussion of Clausius entropy and Boltzmann entropy, has further deduced entropy principle in open system as well.

通过对克劳修斯熵、玻耳兹曼熵的讨论，得到熵的本质和孤立系统的熵增加原理，并把孤立系统的熵增加原理推广为开放系统的熵原理。

Pauli's exclusion principle might have been called a law (and Heisenberg's principle did indeed get picked), and either Maupertuis' rule of least action or Hamilton's related principle are surely as important as they come.

泡利 不相容原理可被称之为定律（海森堡定律确实众望所归），而且至少莫伯丢的最小作用量原理或者哈密顿的相关原理是确实如它们的名称所表明的那样是重要的。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。