类型问题

The theory of "continuum of problem types" supplied a good frame for designing questions in class,"Five Why" question design ing methods played a important role in increasing practice of question design ing.

问题类型连续体"理论为课堂教学问题设计提供了框架"，五何问题设计方法在增加问题设计的可操作性方面起到了重要作用。

However, the solutions of the Cauchy problem of the nonlinear hyperbolic system generally develop singularities in finite time even if the initial data are small and smooth.For this reason, solutions must be found in the space of discontinuous functions. Therefore, one can not directly use the classical analytic techniques that predominate in the theory of partial differential equations of other types. Instead, we construct approximate solutions via the singular perturbation methods. By using the compactness of the approximate solutions, we can obtain the existence of the solutions of original system.

然而一般而言，即使是在初值很小且光滑的情况下，非线性双曲型守恒律的Cauchy问题的解在有限时间内也会出现奇异性，为此，我们必须在不连续函数空间中寻找上述问题的解，因此对这类问题的研究，我们也不可能直接利用在其它类型的偏微分方程中占主导地位的解析方法来解决问题，而是通过奇异扰动法构造近似解，由近似解的紧性得到原问题解的存在性。

In order to solve the problem such as aging establishment, inconsequent structure, illogical parameter, laggard irrigating technique, etc, establishment types and irrigating mode of QinHuangdao, ShanHaiguan, Changli and Luanhe of seashore plain in Hebei province were researched in this paper. The evolvement and irrigating mode of this subarea were known. Through analyzing the researched facts, it is found that ideal establishment type is the fourth heliogreenhouse and its suitable front roof angle is 33°5′~33°18′, back one is 34°~35°.

为解决河北省蔬菜设施存在的诸如设施老化，结构不合理，参数不合理，灌水技术落后等问题，本研究对河北省滨海平原区的秦皇岛、山海关、昌黎至滦河口片的设施类型及灌水方式进行调研，了解了该分区设施类型及灌水方式的发展演变过程，并且提出适合该分区发展的理想设施类型为第四类日光温室，合理的前屋面采光角应该为33°5′~33°18′；后屋面角应为34°~35°。

Considering the distinction of social problems, the works of reportage on social problem can be divided into three categories, which are structural reportage on social problem, transitional reportage on social problem and aberrant reportage on social problem.

根据所反映的社会问题的不同，又可把社会问题报告文学作品大致分为三种类型：结构性社会问题报告文学、变迁性社会问题报告文学和越轨性社会问题报告文学。

This thesis first proposes the idea of EM in view of the drawbacks existing in traditional modeling methods. The main approaches and the general procedure of EM are described and the recent work of GP is surveyed using a taxonomy. Secondly, in terms of model types, the EM problem of complex functions, the EM problem of system of ordinary differential equations and the EM problem of higher-order ordinary differential equations are studied in detail. Finally, some advantages and disadvantages of the EM method are summarized at the end of this thesis.

本文首先针对传统建模方法的不足，提出了演化建模的思想，阐述了演化建模采用的主要方法和一般步骤，并分类概括了遗传程序设计目前的研究内容；然后，按照所建模型的类型不同，分三章详细研究了复杂函数的演化建模问题、常微分方程组的演化建模问题以及高阶常微分方程的演化建模问题；最后，本文对演化建模的主要特点和目前存在的主要问题作了概括和总结。

Hypogene high thermal or deep source epi-mesothermal condition and it is not only stressed the mantle source simply but also the crust-mantle;②in order to guid ore exploration better the artificial classification of uranium deposits should be broken and uranium ore-forming system strengthened;③much attention should be paid to searching the diabase-hosted rich uranium ore in strongly argillized cataclastic zone;④attention should be paid to the influence of basement of volcanic basin on the uranium ore formation that should be undstood both in feeling and theoretically through the ore propect process;⑤relation of red basin with uranium ore formation can be made clear from analyzing tectonics, paleo-climate and time and it is not only theoretically important but also helpful to uranium ore prediction;⑥crypto explosive pipe is an uranium ore, rich uranium ore host structure and it is the next goal for uranium ore exploration in east China.

摘要文章论述了华东火山岩型铀矿找矿值得重视的地质问题：①铀成矿既可形成于浅源浅成低温条件，也可形成于深源深成高温或深源浅成中低温条件，在强调深源时，不是简单地认为是幔源就可以了，还必须强调壳幔作用的地质过程；②打破人为的&类型&划分，加强&铀成矿系统&的研究，更好地指导找矿；③研究基性脉体与铀成矿问题应注意构造、岩石矿物成分、成因、蚀变与成矿3大问题，注意寻找泥岩化作用强烈的破碎辉绿岩脉中的富铀矿；④火山盆地基底对铀成矿的作用主要是提供铀源，将基底对铀成矿的影响从感性认识推向理性认识，有效地指导找矿；⑤红盆与铀成矿关系可以从构造、古气候及时间分析研究中得出结论，它不仅仅是一个理论问题，而且有助于铀成矿预测；⑥隐爆角砾岩筒是铀成矿、成富矿的重要储矿构造，是华东火山岩型铀矿找矿的新领域。

Surface-consistent deconvolution using variable prediction step, and suppression of sand dune ringing;2. Spatiotemporal distribution of moisture content in sand dune s of the unirrigated forestation along the southern marginal zone of Gurbantunggut Desert;3. The concepts of sand land, sand dune and desertified land etc.

在实地调查和多年定位研究的基础上，根据目前沙漠化过程研究的需要，介绍了沙地、沙丘、沙漠化土地等相关概念及其主要区别，阐述了沙地、沙丘、沙漠化土地类型的划分标准以及类型互换使用中应该注意的问题；通过分析影响沙漠化发展方向和过程的关键因素，建立了沙漠化正、逆发展过程的地面判别指标体系，并讨论了不同类型沙丘的主要来源、发展方向及转换过程的判别方法。

By sutdy and gathering information, some important conclusions are presented:(1) Ruby deposits of marble type were located in the plutonic metamorphic zones of orogene where deep-seated fault structure is developed;(2) Genesis of the deposit belongs to the type of thermal-dynamic metamorphism;(3) Ruby-bearing rocks are calcic crystalline marbles, not magnesian marbles;(4) Amphiboles in ruby-bearing rocks arenot tremolites, but silica-poor alumina-rich and chrome-bearing calcic amphiboles.

目前，对于此类型矿床找矿相关的若干重要问题的认识，还相当模糊，主要表现在以下几方面：（1）对此类型矿床的产出构造背景认识不清；（2）认为此类矿床的成因类型为&气成一热液型&或&矽卡岩型&；（3）认为含矿岩石为镁质大理岩或镁质矽卡岩；（4）认为含矿岩石中的角门石为透门石。本文通过实际研究①和相关文献资料的搜集整理，分别对这些

Python solves this prob- lem using something called numeric coercion. This is the process whereby one of the operands is converted to the same type as the other before the operation.

Python使用数字类型强制转换的方法来解决数字类型不一致的问题，也就是说它会强制将一个操作数转换为同另一个操作数相同的数据类型。

It is an open platform based on Web2.0. In the solution we classifies the content of the information website to different types and develops management module for different information, which separates the display the interface from the application, modularize the web function to satisfy the demand of customization and type extension, and so as to solve the problems existing in the construction of information website.

它基于Web2.0的开放平台，将信息网站的内容进行类型划分，并针对不同的类型开发不同的信息展示和管理模块，将信息网站的界面和应用分开，功能模块化，满足了功能定制和类型扩展的需求，从而解决了此类信息网站建设存在的问题。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。