查询词典 problems

At first, the author thinks that the core of direct tax problems of E-C Tax Law is to determine the tax jurisdiction to e-commerce. The paper analyzes the following three questions on the Permanent Establishment principles and income classification rules. Secondly, this paper foucuses on indirect tax problems of E-C Tax Law, including tariff and VAT. Thirdly, this paper foucuses on tax management problems of E-C Tax, including tax evasion and electronic tax. At last, the author discusses the E-C Tax Law of China and puts forward some constructive suggestions on the E-C Tax policy and law of China based on the study of the former parts.

首先，笔者认为电子商务的直接税法律的核心就在于如何界定对电子商务的国际税收管辖权，本文分别从常设机构原则、所得分类规则对电子商务的国际税收管辖权进行了界定：其次，本文对电子商务引起的关税、增值税两方面的法律问题进行了分析；再次，本文研究电子商务引起的税收征管法律问题，包括电子商务引起的逃避税法律问题和电子税务问题，并分析了电子税务建设和完善所必需的法律环境；最后，本文研究我国的电子商务税收法律问题，结合我国实际情况，对我国电子商务税收政策与立法提出了若干建议。

A particular class of problems, known as Grand Challenge problems, are problems whose full solution requires semi-infinite computing resources.

某一特定类别的问题，被称为大挑战问题，这些问题的全面解决方案需要半无限的计算资源。

Do not get married will have a range of issues, such as children's growth problems, account problems, school problems.

不结婚会带来一系列问题，如宝宝的成长问题，户口问题，上学问题等。

The tracer migration that the tracer concentration continuously injecting into semi-infinite sand column(initialization velocity is zero) and the pollutant continuously enter into aquifer through a discharging well that completely enter into the dive aquifer are two representative groundwater pollution problems ,Then this paper respectively sets above two decided solution problems and the union simulation problem of groundwater and solute as examples, from the question description, the mathematical model selection and determination, the parameters selecting to carry on the value computation, the read-write of attribute data , visualizes by the IDL programs, carries on the numerical simulation and the visualization post-processing to the above groundwater pollution problems, and according to the numerical solution and the solute migration curves, briefly analyzes and predicts the temporal and spatial distribution features and distribution range of contaminant concentration.

然后分别以半无限长沙柱中连续注入示踪剂浓度的运移、污染物通过一完全进入潜水层的排放井连续进入含水层这两个典型地下水污染定解问题及地下水流和水质联合模拟问题为例，从问题描述、数学模型选取确定、参数选取到运用IDL编程进行数值计算、属性数据读写、可视化，对上述地下水污染问题进行数值模拟和可视化的后处理，并根据数值模拟的数值结果和溶质运移曲线，对污染物浓度的分布范围及随时空变化趋势作了简要分析预测。

Consequently, it leads to a lot of problems which could cause the imperfect procedure of new products introduction, delay of marketing and quality problems for new products which finally results in the customers' dissatisfactions, degradation of enterprises brands and decline of competitiveness. Some research data show that Chinese company may have some problems in their new product introduction process: the product can't meet customers requirement in the market; don't design or introduce new product to meet customers' requirement; many times rework in the introduction process, and redesign the new product after introduction; without timely introduction plan, the new product introduction cycle is slow compare to the transnational Corporations and new technology.

研究资料表明，中国企业在进行产品导入的过程中经常会出现以下问题：上市的产品有诸多质量毛病，不能满足客户的需求；新产品开发和导入过程中，仍然奉行技术导向的思路，自己能做什么就做什么，而不是千方百计满足顾客的需要；产品导入过程经常出现返工，不断地从生产甚至是从市场返回到设计部门重新设计，导致大量的重复劳动；产品导入速度相对市场中的跨国企业以及行业的技术更新，显得非常缓慢，新产品开发和导入项目在开展时缺乏精确的进度计划，因此缺乏进度控制等等。

Global warming, destroying of ozonosphere, desertization, acid rain and other environmental problems are not any problems of one country because these problems have threatened fundament for survival of all lives on the earth.

在我们身边发生的地球温暖化及臭氧层破坏、沙漠化、酸雨等地球环境问题不再是某一个国家的问题，如今已经成为威胁到地球上所有生物赖以生存的根本的问题。

Partitioning problems belong to a kind of NP- complete optimization problems, which occur frequently in the real world. This paper intr oduces a solution to partitioning problems with satisfactory results by using extende d Hopfield neural network.

摘 要 划分问题是一类常见的NP完备的优化问题，本文利用推广的Hopfield神经网络模型解决了划分问题，并取得了较好的效果，为这个问题的解决提供了一条新的途径。

The flow resistance of Ice slurry increases if the pipes obliquity increases. That means the ice slurry that in the level pipe has the largest flow resistance, the reason is: the gravitation make the flow became more and more foul-up, accordingly, lead to the increase of flow resistance. Sixthly, introduced all of the preparative tasks before we began the experiment, because we met many problems during the test, we had our own methods which could solve these problems. In this paper, problems and these methods were introduced.

随着管道倾角的增大，二元冰的摩擦阻力减小，也就是说相同条件下水平管道内的摩阻最大，这是因为重力的影响导致管道内二元冰和乙二醇分层现象更加明显，从而导致紊流程度增大，最终使得摩阻增大；第六，对二元冰蓄冷空调系统运行前的准备工作进行了介绍，由于在试验过程我们遇到了很多问题，针对这些问题，我们有自己的方法和解决办法，本文介绍了这些问题和相应的解决办法。

After defining notations and ways of positioning on these surfaces, the book considers the problems of the construction of convex hulls , Voronoi diagrams , and triangulations , proximity problems , and visibility problems .

在定义了一系列表达式及曲面上的配置方式后，探讨了凸壳，Voronoi图，三角剖分，相近问题和可见性问题。

We also consider two obnoxious center problems and some problems related to problems A, B,C and D.

我们还研究了问题A，B，C，D的一些推广及两个&讨厌型&的中心选址问题。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。