本文研究用正交多项式逼近非线性趋势，然后对残差进行单位根检验的方法。
Orthogonal polynomial approximation is proposed to estimate the nonlinear deterministic trend and then the residual is used to test the unit root.
本文比较了无机、有机、半有机三类非线性光学晶体的性能、研究进展以及面临的主要问题和发展趋势；
The properties, the research progress and the development trend of inorganic, organic and semi-organic nonlinear optical crystals are discussed in detail in this paper.
利用非线性逐步回归方法作台风活动趋势的预报。
The nonlinear stepwise regression method is used to make typhoon activity tendency forecast.
最后对非线性化学研究进展趋势进行了预测。
At last the trend of development of study on nonlinear chemistry was predicted.
关联维数的全程变化趋势可以反映液压缸运行过程中非线性弹簧的变化特征；
The varying trend of whole process can be used to reflect the varying characteristics of nonlinear spring of moving hydraulic cylinder.
运用非线性理论研究企业环境成本与生产投入之间的动力学关系，预测环境成本与生产投入的发展趋势。
The dynamic relationship between the environmental cost and production input of enterprise was studied by non-linear theory to predict the development trend of environmental cost and production input.
文章考虑网络流量非线性的特点，通过不同的数学模型将流量时间序列分解成趋势成分、周期成分、突变成分和随机成分。
According to the character of non linear network traffic, the traffic time series is decomposed into trend component, period component, mutation component and random component.
随着芯棒伸出量的增加，管材弯曲过程中的壁厚变薄率变化趋势可分为三个阶段即线性下降阶段、过渡阶段和非线性增加阶段。
As the length of mandrel extension increases, the trend of thinning-rate change can be failed into three stages, namely linear decrease stage, transitional stage and nonlinear increase stage.
并针对两类非线性系统，对智能控制发展趋势进行了展望，提出了研究方向。
Aiming at the two type nonlinear systems, it offers the prospects of the intelligent control development trend and puts forward the study direction.
另外，利用非弹性需求谱确定结构的目标位移是现在的发展趋势，因为它避免了繁琐的非线性时程分析。
On another hand, the seismic performance got from inelastic demand spectrum was increasingly popular because it avoids the complicated nonlinear time history analysis.
试验结果发现冻土的冲击韧度随冲量的增加而呈非线性增加趋势。
The results show that the impact toughness of frozen silt increases in nonlinear with the increase of pendulum impulse.
这种方法将一个复杂的非线性非平稳信号逐级分解成若干平稳的数据层与剩余的最终趋势项的叠加。
This method will gradually decompose a complex nonlinear and non-stationary signal into some stable data layers and the remaining final trend.
本文选择农业意义明确的经济计量因子的非线性函数形式，采用最优化方法进行农业技术趋势项模拟。
A nonlinear function of economic factors of clear agricultural meaning is established and the tendency of advancement in agricultural technology is simulated by means of optimization.
不论刚体气动力为线性还是非线性，气动力系数随动压变化的趋势均呈线性。
The aerodynamic coefficient varies with dynamic pressures always linearly, no matter what a rigid aerodynamic force may be linear or non-linear.
沿着这个研究趋势，本论文重点研究了三个方面的问题：非线性电路中混沌的产生机制，混沌系统的电路设计和混沌系统的自适应同步。
This thesis addresses three important issues involved in chaotic systems: mechanism of generating chaos in nonlinear circuits, construction of chaos generators and adaptive chaos synchronization.
非线性，非平稳的时间序列经过经验模分解，可以得到一组内模函数和一个基本的趋势项。
Nonlinear and nonstationary time series are decomposed into a series of instrinsic mode functions and a residual trend item by the empirical mode decomposition (EMD).
结构材料非线性导致更高的动态压力，在“立法会条例”幅度快速上涨，并与实验结果的变化趋势是一致的。
For higher dynamic pressures, the structural material nonlinearity leads to a rapid rise in LCO amplitude, and the varying trend is consistent with experimental observation.
其线性模型主要为因子分析模型和趋势面分析模型，非线性模型为BP神经网络模型。
Linear models mainly include the factor analysis model and the trend surface model. And nonlinear models include BP neural network model.
概率决定论以过去、现在和未来的非线性关系为基础，以概率的形式描述某一随机事件的发展趋势和规律。
The probability determinism has as its basis the non-linear relation among time in the past, present and future, and describes the tendency and law of a contingency in the form of probability.
布朗单一参数四次指数平滑能更好地跟踪时序的非线性变化趋势，达到更好的短期预测效果。
Quartic exponential smoothing method can follow the nonlinear trend of time series better and can also forecast better.
最后总结了滞后非线性模型的研究现状及将来的发展趋势。
Finally, the status quo of hysteretic nonlinearity modeling is summarized and the research direction is predicted.
指出每种方法的优缺点，城市用水量预测应根据实际情况选取预测方法。以郑州市为例，选取不同的方法进行预测及分析，结果表明郑州市2020年之前的用水量呈现非线性递增的趋势。
Taking Zhengzhou as an example, choosing different methods to predict and analyze, the results indicate the increasing trend of the water consumption before 2020 in the city.
结果表明，制品厚度对其成型收缩的影响很大，制品厚度增大时，注射成型收缩率增大，但这种增大的趋势是非线性的，而是随着厚度的增加而逐渐减缓。
The results show that the shrinkage of injection molding part is increased with thickness of parts in non-linearity, and the increase momentum is moderated with the increase of thickness.
本文综述了含有参数激励的非线性动力系统的响应、分岔与混沌问题的研究现状和方法，讨论了所存在的问题及其发展趋势。
The problem of robust stabilization for a kind of nonlinear dynamical systems with the matched uncertainties is studied in this paper.
由于视觉过程本身的高度非线性，采用非线性的信号处理技术就自然成为图像领域的一种重要发展趋势。
Because vision procedure is actually nonlinear, using nonlinear techniques become one kind of important research tend in image fields.
多次重复拉伸使其弹性模量降低并呈现非线性的变化趋势。
Multiple tensions lowed down the elastic modulus of the alloy and exhibited a non-linear relationship with strain.
介绍了运用非线性编辑系统制作水电站工程专题片的基本步骤和需要注意的问题，以及非线性编辑技术的发展趋势。
It describes the basic steps to make special project films with the non-linear editing system and issues to be noted as well as the trend in development of non-linear editing technique.
复杂度、近似熵及关联维非线性指标每小时各组动态变化趋势图存在白天低，夜间高的相同变化趋势。
The 24-hour variation charts of nonlinear parameter indexes, including Comp, ApEn and CD, showed that the nonlinear parameter rose at night, and went down in the day time.
复杂度、近似熵及关联维非线性指标每小时各组动态变化趋势图存在白天低，夜间高的相同变化趋势。
The 24-hour variation charts of nonlinear parameter indexes, including Comp, ApEn and CD, showed that the nonlinear parameter rose at night, and went down in the day time.
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