查询词典 difficult problem

Both teachers and students have a difficult problem—how to gain access to the up-to-date reference books.

教师和学生都有一个困惑的问题——如何才能看到最新的参考书。

This paper introduces the principle and history of Ultraviolet Disinfection Technology and its main functions, such as broad-spectrum sterilization,Effectively killing of giardiasis and Cryptosporidium Hominis, and advanced oxidation process,which respectively solved a difficult problem in water treatment domain, namely By-products of disinfection, threat of Giardiasis and Cryptosporidium Hominis, and refractory biodegradation organic compounds pollution.

本文概述了紫外线消毒技术的原理及发展概况，详细介绍了紫外线技术在水处理领域的三大功效：即广谱杀菌，有效杀灭贾第鞭毛虫和隐孢子虫，以及高级氧化功能，这些功能分别解决了水处理领域的三大难题：消毒副产物问题，贾第鞭毛虫和隐孢子虫的抗氯性问题，以及难降解有机物污染问题。

It has solved the technical difficult problem that tartary buckwheat flour lacking gluten can't to process it to noodle,which by means of pregelatinization technology of tartary buckwheat and using composite additives.

应用复合添加剂（魔芋微细精粉∶瓜尔豆胶∶黄原胶为3∶3∶2）和苦荞麦粉预糊化工艺，解决了苦荞麦粉无面筋无法加工挂面的技术难题。

The study of low energy hadron physics in QCD is a long standing difficult problem due to its nonperturbative nature.

由于非微扰效应起主要作用，QCD低能强子物理的理论研究一直是一个难题。

Chinese handwriting characters recognition is the most difficult problem in character recognition field.

摘 要：手写体汉字识别是汉字识别领域中最难的课题。

Encouraging is, this world difficult problem smoothly has-been recently solved by our country public security scientific researcher.

鼓励顺利地是，这位世界困难的问题has-been 由我们的国家公共安全科学研究员最近解决。

Chapter 4 puts up the basic theory of non-linear finite element calculation methods and deduces calculation iterative formula and relevant accelerating iterative format. In the calculation of non-linear finite element, yielding element calculation is a difficult problem,"fictitious elastic stress" methods propounded in this paper puts the axe in the helve.

第四章提出了非线性随机有限元法的基本理论，并推导了计算迭代公式，为加快计算速度，提出了相应的加速迭代格式，对于基于非线性随机有限元的可靠度计算中，屈服单元的计算方法是一个难题，本文提出了"虚拟弹性应力"法，较好的解决这个难点。

But, the difficult problem that Zhang Baoquan faces is far still more than hereat.

但是，张宝全面临的难题还远不止于此。

But that how to construct a DPEA, which could satisfy the requirement of developers in different domains or different phases as well as new development method in the future, is a very difficult problem at all times. Hereinto software architecture of DEPAis a key factor.

如何构造嵌入式软件开发平台，既满足不同开发阶段及不同领域开发者的需求，又兼顾未来新的开发方法的需要，则一直是个难题，其中开发平台的软件体系结构是一个关键因素。

However,it is a difficult problem due to heterogeneous data structure and semantics of these data sources.

但是，不同数据源之间数据结构和语义的异构性导致数据集成是相当困难的。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。