Sample complementing is the practical demand of sampling survey, and its also a difficult problem in sampling technology.
样本追加是抽样调查的现实需求，也是一个抽样技术难题。
In the theory of elastic thin plates, the bending of a free rectangular plate on the elastic foundation is also a difficult problem.
在弹性地基上的自由矩形板的弯曲，在弹性薄板理论中也是个难题。
Technique of three-dimensional object recognition is one of the most important techniques in video tracking system and also a difficult problem in it.
三维目标识别技术是电视跟踪系统中的关键技术之一，也是目前该领域亟待解决的一个难题。
Establishing and improving software process capability is the requirement of the high maturity level of CMM or CMMI, and also a difficult problem of software measurement.
建立和改进软件过程能力是CMM或CMMI高成熟度等级的要求，也是软件度量的一大难点。
Waterproofing materials in the construction of the protection and leakage after maintenance is also a difficult problem, after any part of the penetrability of the damage.
防水卷材在施工后的保护和漏水后的维修亦是难题，任何部位的贯穿性破损。
On the other hand, from the Legislative Technically, how abstract the kinds of people in real life into the laws of "person" is also a difficult problem for the state enactments.
另一方面，从立法技术上来说，对于成文法国家，如何将现实生活中姿态百异的具体的人抽象成法律中的“人”，也是面临的一大难题。
Workpiece deformation during heat treatment is a common phenomenon, and is also a difficult problem to be solved, besides, quenching have a greatest impact on the deformation of the workpiece.
变形是工件热处理过程中常见的现象，是一个较难解决的问题，而淬火对工件的变形影响最大。
And it is also a difficult problem that there had no standard, practical, continued development of methods and techniques during the development of the communication network management systems.
而在通信网络管理系统开发中没有一个规范、实用和持续的开发方法和技术，也一直是网络管理建设中的难点问题。
They also have a succession problem: if the founders want to retire, they can find it difficult to realise the value of the business.
他们也存在继承问题：如果创始人想退休，他们会发现公司的价值很难实现。
Also, you can solve a problem in more than one way in PHP and the dangers of making painful mistakes that become difficult to fix later are never far away.
而且，在php中，解决问题的方法不止一种，比较容易犯那种惨痛的错误，这种错误过后难以订正。
Ronaldo also revealed that he suffered from a thyroid problem that had made it difficult to control his weight.
罗纳尔多更坦言患有甲状腺疾病，难以控制自身体重。
Nanjing is not exceptional also, power, energy saving is the imminent matter, but in the end the limit who Electric is a difficult problem to solve.
南京也不例外，限电、节电是迫在眉睫的事，但到底该限谁的电也是一个很难解决的问题。
The geological prediction of tunnel is an important problem for construction quality and safety, and also a difficult object for engineering geophysics.
隧道地质超前预报关系到隧道工程施工质量和安全，是国内外研究的前缘课题，也是工程地球物理研究中的疑难问题之一。
In auditing system about network security, the technology about information catching and reverting is a difficult problem. At the same time, it is also foundation problem.
信息捕捉与还原技术是网络安全技术中审计系统实施的一个难点，同时也是实现审计系统的基础。
Multitarget interception is a big difficult problem in ballistic missile defense, and is also the most arduous technology of the missile defense system of US.
多目标拦截是弹道导弹防御的重大难题，也是目前美国导弹防御系统所遇到的最大的技术难点。
The rainstorm disaster is one kind of worldwide natural disasters, simultaneously it is also a worldwide difficult problem.
暴雨灾害是一种世界性的自然灾害，同时也是一个世界性的难题。
Moreover, in our country had realized gradually to the question pressing situation, how carries on the supervision and the control is also a very big technical difficult problem.
此外，在我国已逐渐认识到问题的紧迫性的环境下，如何进行监管和控制也是一个很大的技术难题。
Difficult to express encouragement, you can think of a stupid idea, or make mistakes, but not everyones problem, also not a coach or a teachers question.
很难表达鼓励之言，你可以自己想个很笨的想法，或者犯一些错误，但不是大家的问题，也不是教练或老师的问题。
As the front processing unit in an infrared imaging system, target detection is one of the important parts in precision-guidance and is also a critical technique or difficult problem.
目标检测作为红外成像系统中前端的处理环节，是精确制导中一个重要的组成部分，也是其中的一个关键技术和难点问题。
The study on a frozen wall forming affected by seepage water is not only an important and difficult problem , but also an urgent one to be solved in the Artifical Ground Freezing engineering.
研究渗流水作用下冻结壁形成是冻结法凿井的一个重点和难题，也是冻结工程迫切需要解决的问题。
The stereo matching is a key problem of computer vision, and also is the difficult problem.
立体匹配是计算机视觉领域的一个关键问题，同时也是难点问题。
The technical difficulty in flood discharging energy dissipation of the Xiaowan arch dam body leads the world and its plunge pool optimization design is also a major difficult problem of the project.
小湾拱坝坝身泄洪消能的技术难度已达世界当前最高水平，其水垫塘的优化设计亦是工程中的一大难题。
At the same time, the management is also a problem, so for your wedding is very difficult to do a good job on the details of the wedding.
同时在管理上也是有问题，所以对你们的婚礼也就很难再婚礼细节上做好。
But it has also been a difficult aspect of physics teaching while abstract physics concepts teaching and learning is a more puzzled problem for the teachers and students.
但是，物理概念教学一直是物理教学中的难点，而抽象物理概念的教与学更是困扰广大师生的一大难题。
But it has also been a difficult aspect of physics teaching while abstract physics concepts teaching and learning is a more puzzled problem for the teachers and students.
但是，物理概念教学一直是物理教学中的难点，而抽象物理概念的教与学更是困扰广大师生的一大难题。
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