Secondly , in electromagnetic wave domain , this about the polarization of electromagnetic waves is a difficult problem in teaching 其次,在电磁波领域中,平面波的极化问题是教学中的一个难点。
In the recent research of e - government , we found the information share were still regarded as a difficult problem 在不久前对电子政务工作的调研中，我们发觉信息共享问题仍被很多单位视为一大难点。
Calculating the energy of a vacuum state is a difficult problem and usually depends on finding suitable approximations 计算真空态能量是个困难的问题，而且往往取决于是否能够找到贴切与合适的逼近方式。
The financial supervision and management is a difficult problem to influence every country ' s finance and economies " safe and stable 它是20世纪以来一直困挠世界各国金融与经济安全稳定的重大问题之一。
The processing of complex long sentences is a difficult problem in the implementation of a practical machine translation system 摘要在实用机器翻译系统的研究开发中，复杂长句的翻译处理是其面临的一个主要难题。
You think she is stupid , but it is the other way around . yesterday she worked out a difficult problem that none of her classmates could work out 你认为她很笨，但恰好相反。昨天她算出了一道没有哪个同学能算出的难题。
It is a difficult problem and a research focus to do the research on how to intuitively express biological processes recently 在生物过程模拟的研究中,如何直观地表达复杂的生物模型是一个难题,也是目前研究的焦点之一。
As a result , the extraction of weak signal from strong chaotic noise has been a research focus and also a difficult problem in these recent years 因此,检测湮没在强混沌背景下的微弱信号是目前国内外研究的热点和难点。
During the process of modern aircraft design , it ' s a difficult problem for aircraft engineers to analyze and manage large amounts of data 在现代飞机设计过程中，大量专业数据的分析与管理是困扰相关技术人员的一道难题。
Contact stress is not easy to be tested and measured and hard to compute , yet it is a difficult problem with extraordinary importance for the design 摘要接触应力是不易检测、难于计算，但对于设计又是非常重要的一个难题。
