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棘手的问题
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  knotty problem
     There is a very knotty problem for H.323 conference system and IP telephone in practical usage.
     H. 323标准的视频会议系统和IP电话在实际应用中有一个非常棘手的问题:NAT(网络地址转换)与防火墙的穿透问题。
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     The author of this thesis has started her study with this knotty problem and made an attempt at setting up a test system of Chinese-English translation by resorting to computer, the carrier of Information Age, as the medium of the test.
     本论文所做的研究正是从这一向来棘手的问题出发,借助当前信息时代的载体——计算机作为测试媒介,力图构建基于汉英翻译的测试系统。
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     The prediction and forecasting of coal and gas outburst is a complicated and knotty problem.
     煤与瓦斯突出预测预报是一个十分复杂而棘手的问题
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     The production of high visccoity oil is a knotty problem in every oilfield.
     高凝高粘稠油的开采,是各油田感到十分棘手的问题
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     Lacking of fault samples is a knotty problem in the fault detection of complex systems such as Liquid-propellant Rocket Engines (LRE).
     在对类似于液体火箭发动机这种复杂系统的故障检测过程中,一个非常棘手的问题是缺乏故障类样本。
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  troublesome problem
     In second language teaching, a troublesome problem that teachers are faced with is that learners are lack of interest, motivation, fed up with learning, and some other problems caused by them, such as poor learning efficiency, being absent from class, playing truant and even giving up learning.
     在第二语言教学中,教师所面临的一个十分棘手的问题就是学生对学习缺乏兴趣、学习动机不强、厌学,以及由此引发的学习效率底、旷课、逃学、自暴自弃等问题。
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     In the everyday teaching,Students making mistakes is unavoidable How do teachers deal with the troublesome problem ?
     在日常的教学中,学生出错是在所难免的,那么一线的广大教师是如何对待这一棘手的问题的呢?
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     The solitary kidney is the only kidney to maintain the health of human body,The therapy to renal calculi of solitary kidney is also a troublesome problem in clinical department.
     孤立肾是维持人体健康的仅有的一个肾脏,孤立肾肾结石的治疗一直是临床上一个相当棘手的问题
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     How to normalize the running behavior of the state-owned commercial banks has been a troublesome problem.
     我国经济正处在一个非常重要的转折阶段,如何规范银行特别是国有商业银行的行为,使其更加适应经济发展的需要,是我们面临的十分棘手的问题
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     How to select effective therapy has been a troublesome problem in Orthopaedic Surgery. The authors introduced several operative approaches and discussed some commonly used operative methods to correct deformity, improve life and professional exercise ablilty.
     对小儿脑性瘫痪如何正确设计有效的治疗方法,仍是骨科领域中较为棘手的问题,本文详细阐述了如何筛选适宜病例,选择有效术式,使之在原有的病理基础上矫正畸形、改善姿势及步态,提高生活自理能力和接受职业训练,并对一些常用术式作了介绍。
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  a gordian knot
     Change in the work and construction scheme optimum are the question that we often meet, it is a Gordian knot too.
     工程变更和施工方案是施工阶段投资控制中经常遇到的问题,同时也是很棘手的问题
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  “棘手的问题”译为未确定词的双语例句
     The crackle and breach defect of5A05,5A06alloy thin walled tube is always one of the hard problems in cold rolling.
     5A05、5A06合金薄壁管冷轧过程中的裂纹、裂口缺陷,一直是生产中较为棘手的问题之一。
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     The evaluation of radar jamming effect is important and difficult.
     雷达干扰效果评估是一个十分重要且很棘手的问题
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     However,the control on contamination in rainwater is the thorniest problem in technology of manual recharge groundwater.
     但对雨水中污染物的控制,是利用雨水人工补给地下水技术中最棘手的问题
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     It is a difficult work for DBA and application users to send email by using UTL_SMTP protocol from Oracle 8.1.6 and above version.
     利用UTL—SMTP协议从Oracle8.1.6版本以上的数据库中发送电子邮件是众多Oracle数据库管理员和Oracle应用使用者感到非常棘手的问题
短句来源
     On the other hand, the performance evaluation of the supply chain is one key and difficult problem in the course of implementing supply chain.
     另一方面,绿色供应链绩效评价作为绿色供应链实施过程中一个关键而又棘手的问题,在绿色供应链中占有很重要的地位。
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  knotty problem
The preferential formation of a pyrochlore structure is a knotty problem in the preparation of Pb(Zn1/3Nb2/3)O3 (PZN)-based thin film materials and its presence is significantly detrimental to the dielectric and piezoelectric properties.
      
Another knotty problem is how the values of the older generations can be transmitted to the young.
      
Atomic level modeling of permeation through ClC channels, which is coupled with the opening of the fast gate, is a knotty problem.
      
  troublesome problem
Although awareness has increased over the years, mycoplasma infection of cell cultures remains a common, troublesome problem that affects many cell functions and can markedly influence proper interpretation of test results.
      
Furthermore, the microchemical investigation of brittle Roman silver coins has allowed us to identify the origin of this troublesome problem.
      
The tempering of fat products to convert their components to stable polymorphs is an important and a sometimes troublesome problem in the manufacture of these products, particularly chocolate and chocolate-type confections.
      
Avoiding lower-lid flaps in a lower-lid blepharoplasty has helped prevent this troublesome problem.
      
Parastomal hernia, particularly when recurrent, presents a troublesome problem to the surgeon.
      
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  a gordian knot
The Rome Statute and the Crime of Aggression: A Gordian Knot in Search of a Sword
      
Quality control of Uterm?hl-based phytoplankton counting and biovolume estimates-an easy task or a Gordian knot
      
Cutting a gordian knot the solution to Newcomb's problem
      


Catastrophe theory has been applied in this paper to investigate the acidity or basity of the hydroxides Me(OH)m in aqueous solution. If some suitable parameters of atomic structure, eg charge-radius ratio or radius and electronegativity are selected, it may be shown that the strong acidic and basic hydroxides, weakones, amphoteric hydroxides are distributed respectively in the regious of one local minimum, cusp and pocket of butterfly. It's cause and the physical meaning of mathematic model have beendiscussed...

Catastrophe theory has been applied in this paper to investigate the acidity or basity of the hydroxides Me(OH)m in aqueous solution. If some suitable parameters of atomic structure, eg charge-radius ratio or radius and electronegativity are selected, it may be shown that the strong acidic and basic hydroxides, weakones, amphoteric hydroxides are distributed respectively in the regious of one local minimum, cusp and pocket of butterfly. It's cause and the physical meaning of mathematic model have beendiscussed and explained from view of catastrophe theory. It shows that the topological structure of plane-diagrams correlating funetiota of paraters of atomic structure and chemical properties may be deduced from crophc theory.

本文运用突变理论来研究氢氧化物[Me(OH)m]水溶液的酸碱性问题。我们发现只要选择适当的键参数(如电荷半径比z/r_k和负电性x、或r_K与x等),强酸、强碱分布在蝴蝶型突变模型的单值区中,而弱酸、弱碱分别分布在新月型、(Cusp)的双值区中,两性氢氧化物分布在袋形的三值区中,本文从蝴蝶型突变模型出发对上述图形提出解释,并探讨了数学模型的物理意义。本文还指出可以用突变理论来导出键参数平面图的拓朴结构,突变理论将对当代量子化学感到棘手的问题——键参数函数与化学性质的关系——作出有益贡献。

There are more long sentences in English literature on science andtechnology. It is sometimes a rather tricky job to translate them intoChinese. This article presents several ways of translating such sentencescommonly appeared in the literature on science and technology, based oncomparing English with Chinese.

英语科技文献长句较多,往往是汉译的棘手问题。本文从英汉两种语言的对比出发,针对常见的科技英语长句,提出汉译的若干方法。

This paper deals with the conversion of cutting tool geometry in different reference systems which forms an intricate problem to tool engineers and designers. Among them are the conversion of cutting tool angles from tool-in-hand system to tool-in-use system, the conversion of indexible tool insert angles into tool angles and the like. The conversion relation is analyzed by means of the dihedral method presented in ref. [1], which seems to be the most preferable one because of its clarity in concept, simplicity...

This paper deals with the conversion of cutting tool geometry in different reference systems which forms an intricate problem to tool engineers and designers. Among them are the conversion of cutting tool angles from tool-in-hand system to tool-in-use system, the conversion of indexible tool insert angles into tool angles and the like. The conversion relation is analyzed by means of the dihedral method presented in ref. [1], which seems to be the most preferable one because of its clarity in concept, simplicity in graphic representation and rapidity in calculation.A set of general conversion formulae have been derived with all correlated formulae listed in the addendum.

刀具在不同参考系中的几何角度的换算,例如将刀具的标注角度换算成工作角度、将可转位刀具的刀片角度换算成刀具角度等,是刀具设计师及工艺人员经常遇到的棘手的问题。根据笔者的教学实践,感到文献[1]所提出的二面角法具有空间概念清晰、作图简便、解题快捷的优点,不失为解决这类问题的一种好方法。本文利用二面角法对这种换算关系进行了分析讨论,并得出了一组通用的换算公式。对本文所涉及的一些二面角法公式已在文后的附录中给出。

 
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