原理

The theory and basic assumption of distributed hydrological for water resources assessment under various environment is introduced to solve the problems of restoration distortion and restoration invalidation in traditional method. A method, namely UCMV (upreach for calibration and mid-reach for validation), based on parameter calibration by up-stream runoff station and verification by validation midstream station is developed.

为解决变化环境条件下水资源评价中的&还原失真&和&还原失效&问题，本文提出基于物理参数的分布式水文模型用于变化环境下水资源评价方法的原理和假定，以及基于此原理利用上游测站流量进行模型参数率定和中游测站进行验证（简称UCMV， Up-reach for Calibration and Mid-reach for Validation）的水资源评价新方法。

This paper presents theoretical analysis, circuit design of ka band doubler using two beam-lead Schottky barrier diodes as variator.

本文主要阐述了利用反向并联二极管对进行二倍频的原理和利用该原理设计8mm波段二倍频器。

In this paper,The necessity of frequency tracking in ultrasonic cleaning equipmens is discussed.Based on a introduction on the principle of the mian circuit of the ultrasonic power supply for cleaning equipmens and the principle of PLL ,the output frequency of 74HC4046 is changed by a singlechip measuring the phase difference between volage and current.

本文讨论了超声波清洗机中自动频率跟踪的必要性，在介绍超声波清洗机的主电路原理、PLL锁相环原理的基础上，利用单片机检测超声电源负载的电流、电压的相位差，来改变74HC4046 的输出频率，完成了变步长频率跟踪软件设计。

In this paper,the necessity of frequency tracking in ultrasonic cleaning equipmens is discussed.Based on introduction on the principle of the mian circuit of the ultrasonic power supply for cleaning equipmens and the principle of PLL,the output frequency of 74HC4046 is changed by a single chip measuring the phase difference between volage and current.The software of adaptive tracking technique with varied frequency steps is completed.

讨论了超声波清洗机中自动频率跟踪的必要性，在介绍超声波清洗机的主电路原理、PLL锁相环原理的基础上，利用单片机检测超声电源负载的电流、电压的相位差，从而改变74HC4046 的输出频率，完成了变步长频率跟踪软件设计。

Abstrict:This article introduced a kind of make use of Siemens PLC and its network control electric stove temperatures, and described the engineering design step of the basic principle, PLC of the basic principle, PLC of the electric stove.

摘 要：本篇文章介绍了一种利用西门子PLC及其网络控制电炉温度，并且叙述了电炉的基本原理、PLC的基本原理、PLC的工程设计步骤。

With long term research professor Lin and his fellow men develop theories of "mannikin analogy"、" tissue-equivalent"、"atom、molecule、big molecule design"、" technology of simulate enzyme"、" technology of inherit templet"," quasi-element equivalent method" and "light element substitute method".

经过多年的研究，林教授与其同仁创建了&人体模型的相似性原理&、&人体组织等效性的判别及测试方法&、组织等效材料的&原子、分子、大分子层次设计原理&。用仿生工程模拟酶技术和遗传模板技术成功研究出体内外能量传递和分布辐射、超声、微波、热力学、力学及复合等效的新型仿生材料。这些材料按照人体组织相应的基本元素组成，按照&准元素等效&和&轻元素替代法&避免金属元素的谱线干扰，在医疗照射能谱范围内（60KeV-20000KeV），组织等效性误差控制在5%以内。

Facing these problems, the half-coupled conservation laws of energy for polar continua, conservation law of energy and Hamilton principle for micropolar multifield theories, principle of virtual velocity and dipolar velocity as well as of virtual stress and dipolar stress for solids with microstructure are proposed.

针对这些问题，提出了半耦合型的极性连续统能量守恒定律、微极多场耦合理论能量守恒定律和Hamilton原理与带有微结构的固体理论的虚速度和虚双极速度以及虚应力和虚双极应力原理等。

Moreover, this paper makes an effort in incorporating theCosserat theory in the VCFEM for the elastic-plastic analysis of heterogeneous materialsbased on the PVP. The chapters are divided as follows: In Chapter 1, the author summarizes the study on the equivalent mechanics properties ofheterogeneous materials (including the development of the universal relationship which isirrelevant to the micro structure, the discussion of the limitations of the effective moduli, thecomputation of the effective properties of heterogeneous materials with the micromechanicsmethod and the FEM, and the equivalence of the heterogeneous micropolar materials) and thepresentation, the evolution, the corresponding numerical studies of the Cosserat model and itsapplications in engineering.

本文基于参数变分原理，构建了Cosserat体弹塑性有限元分析模型并用于求解应力集中和应变局部化问题；利用Voronoi有限元法提出了适用于非均质材料宏观弹塑性性能计算的参数二次规划算法；进一步将Cosserat模型应用到Voronoi有限元法中，提出了基于Cosserat理论的Voronoi杂交有限元法，并采用参数变分原理进行新模型的分析计算。

Of course, both the general doctrine, and this way of approaching the matter via the meaning of the words used in defining the offence, would come to the same thing if it were the case that, whenever we have an active verb like ' drives ', this implies , as part of its meaning, the existence of the minimum form of conscious muscular control , upon which the general doctrine insists.

当然，如果情况是这样的，即每当我们使用一个象&驾车&一样的行为动词，而作为该词之含义的一部分，它暗含着存在一般原理所主张的有意识的肌肉控制的起码的方式，那么，一般原理也好，通过被用以界定犯罪之措辞的含义来探讨问题的这种方法也罢，最终都会殊途同归。

This paper has described the basic function and qualification of the compensating brake master cylinder admeasuring apparatus firstly, given an introduction of gross structure, measuring principle and method, put its emphasis on the dissertation of working principle of main composing parts, such as endoscopic-micro optical system, CCD pick up camera and precision machinery system, and on the design of optical imaging system. It has analyzed the main error and the influence on measuring accuracy as well as giving a conclusion of error analysis.

本文首先叙述了制动主缸补偿孔测量仪的基本功能和技术指标，接着介绍了仪器的总体结构、检测原理与方法，重点对系统的主要组成部分，如内窥显微光学成像系统、CCD摄像机和精密机械系统等的工作原理进行了论述，并对光学成像系统进行了设计，最后分析了系统的主要误差来源及其对系统检测精度的影响，并给出误差分析结论。

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。