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The results show that a the variation of annual mean runoff of Huayuankou section exist an intrinsic dynamic mechanism, which is the results of joint action of affecting factor of periodicity and non-periodicity, having obvious chaos characteristic; b the correlation dimension of attractor of phase space is 5.09 and saturation inserted dimension is 14. It shows that to establish a mathematical model of the annual mean runoff system of Huayuankou at least requires 6 independent variables and the required saturation inserted dimension for rebuilding phase space is 14; c the steady estimate of Kolmogorov entropy is 0.14, showing the average predictable time of the annual mean runoff variation of Huayuankou is about 7 years and; d using nonlinear deterministic chaos model is more suitable to describe the variation of annual mean runoff of Huayuankou.

结果表明：①花园口年平均径流量变化存在着内在动力学机制，是由周期性和非周期性影响因子共同作用的结果，具有明显的混沌特性；②相空间吸引子的关联维为5.09，饱和嵌入维数为14，这说明要建立花园口年平均径流系统的数学模型，至少需要6个独立变量，重构相空间所需要的饱和嵌入维数为14；③Kolmogorov熵的稳定估计为0.14，说明花园口年平均径流量变化的平均可预报时间大约为7年；④用非线性确定性的混沌模型比完全的随机模型更适于描述黄河花园口年平均径流量的变化。

In Part One we pointed out that it is important for the evolution problem of pulsars to estimate their ages.

在第一部分的引论中已指出对脉冲星演化问题，其年龄的估计是很重要的一环。

But Piper Jaffray analyst Gene Munster -- based on longer-than-expected lines at stores and high expectations for online preorders -- more than doubled his initial first-day sales estimate to between 600,000 and 700,000 units, including preorders.

但券商Piper Jaffray的分析师芒斯特将他估计的iPad上市首日销售量提高了一倍，增至60万至70万部，其依据是苹果专卖店外长于预期的购买者队伍以及预计会有很多人从网上订购iPad，他的预期数字中包括预定的部分。

This paper develops Prof. Ichi1aw's creep theory. A series of creep ealculation formulas of the hydraulic motor are devrived. Taking Staffa motor for example, this paper conducts theoretical calculation and some experiments and computer simulation. The results are in such correspondence that it is possible to pre-estimate and determine the minimum steady rotatory speed.

本文对日本市川常雄教授关于&爬行&的研究进行了拓展，推导出了一系列液压马达低速指标计算公式，并以Staffa型液压马达为具体研究对象，进行了理论计算、台架试验测定和计算机仿真，其结果有较好的一致，从而实现了对液压马达最低稳定转速进行预估和标定。

This classification is exceedingly convenient to pre-estimate the medium short tunnel gushing in this area, which provided an effective guide for the design and construction of Tianchan2 grade special purpose highway in Gansu province.

隧道涌水类型划分对该地区中短隧道涌水预测极为方便，为甘肃省天巉二级汽车专用公路设计与施工提供了有效指导。

Objective The study was designed to estimate the status and influential factors of food allergy in order to prevent the disease and provide guidance for paediatric clinic.

目的 探讨儿童食物过敏的现状及其影响因素，以期为食物过敏的预防及儿科临床工作提供一定的指导。

A hybrid inversion scheme for estimating surface variables of vegetation is proposed under Bayesian Network theory,and then is used to estimate chlorophyll content of winter wheat leaves and Leaf Area Index of canopy.

基于贝叶斯网络理论，建立用于植被地表参数估计的混合反演模式，结合遥感物理模型实现了冬小麦叶片叶绿素含量和冠层叶面积指数的反演。

The system not only can be applied to estimate the principal engineering quantities rapidly for most problems of railway planning, decision making and design, but also is a development of fuzzy database technique.

该系统的实现，不仅可满足本文及其他需对铁路主体工程数量作出快速估算的铁路规划、决策与设计问题的需要，而且是对模糊数据库技术的一种发展。

Objective To re-estimate price elasticity of different income groups demand for cigarette in terms of the lastest national tobacco consumption data and provide policy-makers with evidence to make decision on public policy of tobacco control.

目的 利用最新的全国调查资料重新估计我国不同收入成人的卷烟需求，为制定控烟的公共卫生政策提供依据。

And therefore, their performance is not good. But it is well known that there are intrinsic relations between speech basic units. It is necessary to develop an adaptation algorithm to use the relations and few adaptation data to re-estimate more model parameters and then get speech models more suitable for the new speaker.

最大似然平滑预测方法由于不同语音模型之间存在着相关关系，有必要开发话者自适应技术，利用语音模型之间的关系和少量新话者的语音数据，尽量多地适应模型参数，使得最终的模型更代表新话者的语音特点。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。