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Therefore, researching on the influence of effluent for vibration property of the sucker rod string has important reference value for rational configuration interval design of sucker rod centralizer, and also has important significant theoretical actual meaning on the simulation of the dynamic parameters and optimizing the running of polymer holes.

因此，研究聚驱抽油机井产出液对抽油杆柱振动特性的影响，对于指导扶正器配置间距设计、完善聚驱抽油机井动态参数仿真与运行优化技术都具有重要的理论和实际意义。

OBJECTIVE: To screen sensitive indexes for functional treatment of class Ⅱ division 1 malocclusion from common cephalometry items to provide reference for clinical diagnosis and treatment.

目的：从常用的头影测量项目中，筛选出对Ⅱ类错的功能矫治效果起主要作用的评价指标，为临床诊治提供参考。

The above-mentioned experiments and theoretical analysis provide reference in application of ceramic materials for engineering technical personnel and they also lay a foundation for the application of ceramic materials in mechanical engineering.

上述试验和理论分析，为工程技术人员在工程实际中应用陶瓷材料提供了参考依据，也为本文在机械工程中应用陶瓷材料奠定了基础。

This thesis aims at discussing "notice filing" of UCC Article 9 " Secured Transactions" and providing reference for the improvement of China's existing registration for chattel mortgage.

本文运用了比较分析的方法、经济分析的方法和逻辑分析的方法对美国动产担保登记制度以及我国现行的动产抵押登记制度作了全面的分析。

The phase of optical wave can be recovered by the intensity transport equation under the paraxial approximation For the optical system with diffraction limit, it is difficult to get the boundary radical slope of phase and sample in the circular domain boundary when using the intensity transport equation to recover the phase, consequently, we reviewed an algorithm mentioned in the reference ［4］, namely, the equation, computation domain and boundary condition are changed, then the phase is reconstructed by the multigrid method and corrected at last Moreover, the experiment system is set to testify the algorithm, and the recovered phase from the intensity data detected by CCD is compared with the result from phase retrieval algorithm, it is found that the phase reconstruction error can reach 017 λ in the case of non-uniform intensity distribution, as a result, the method is suitable for the phase recovery with low wavefront sensing accuracy.

在傍轴近似条件下，可以利用光强传播方程对畸变波前进行相位恢复。对于衍射受限的光学系统，很难获得相位的边界径向斜率值作为边界条件，此外，要获得精确的圆域边界采样值也并非易事。为了克服上述困难，进一步研究了相位恢复改进方法，即改变了方程的表示形式、计算区域和边界条件，并用多重网格法进行求解获得重构相位，最后再将其修正。为了验证算法的精确性，搭建了实验系统对算法进行实验验证，将由CCD探测的光强分布进行计算得到的相位分布与相位恢复算法的结果进行比较，证明在光强分布非均匀的情况下，该方法恢复的相位均方根误差能够达到017 λ，可以适用于波前传感精度要求不是很高的相位恢复。标签自适应光学相位恢复相位修正光强传播方程 adaptive optics phase retrieval phase correction intensity transport equation

For the distinction between recognition and recall, and their significance for the role of memory in thought, see Gareth Evans's The Varieties of Reference ( Oxford: Clarendon Press, 1982), ch.8, sec.

为了识别和记忆之间的区别，以及它们对在思想记忆作用的重要性，看到加雷思埃文斯的参考的品种（牛津：Clarendon出版社，1982），ch.8，秒。8.4。

The invention relates to an amplifier circuit containing a high-frequency transistor (1) and having a circuit (2) for adjusting the operating point, which provides a base current for the high-frequency transistor (1) according to the voltage released at a resistor (3) which is connected in the collector ring of the high-frequency transistor (1). The circuit (2) has a differentiating unit (20), fed by the supply voltage, which compares the voltage released at the resistor (3) with a reference voltage.

带有高频晶体管(1)的放大器电路具有一个用于工作点调整的电路(2)，其依赖于在连接在高频晶体管(1)的集电极电路中的电阻(3)上下降的电压为高频晶体管(1)提供基极电流，电路(2)具有一个由供电电压馈电的差分节(20)，其把在电阻(3)上下降的电压与基准电压比较。

That is of instruction meaning for the development of systemcolorant and can provide reference for the establishment oftechnology specification about system colorant .

从色浆的颜色体系、色浆技术、颜色接受性、对基础漆性能的影响、环保性能以及色浆本身的性能指标等方面说明色浆的评价评估方法，同时对开发系统色浆也有一定的指导意义，并为今后制定相应技术规范提供参考依据。

With many examples, this paper integrates the theory of visual communication design into the design of teaching websites to change the one-sided view of people towards the design of teaching websites. Therefore, it's hoped to build a complete and integral framework for the ideas of teaching websites design and provide feasible reference for the practice of website designers.

本文结合实例，将视觉传达设计的理论渗透到教学网站设计的理念中，目的在于从根本上转变人们以往对教学网站设计的片面认识，架构一个全面、整体的教学网站的设计理念，为网站设计者的实践提供可行性参考。

Observations of pollen grains of the two regions can provide reference material for divergence and migration of Compositae, and for comparative studies of fossil pollen.

通过对这两个地区菊科植物花粉形态的观察有可能为菊科分化、迁移，以及化石孢粉的研究提供参考资料。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。