Because of its many particular properties in optics , acoustics , electricity , magnetism , heat , catalysis , mechanics , chemical activity etc , and its great potential high technology applied prospects , nanopaticle has become one of the quite popular problem in materials research field , it gains much attention of the scientist from different countries in the world 纳米粒子以其独特的光、声、电、磁、热、催化、力学、化学活性等性质及巨大的潜在的高科技前景，成为材料科学研究的热点之一，引起世界各国科学家的极大关注。
Since the real polarimetric sar data was derived in the mid 1980s , it has been proved that using polarimetric information can improve performance of sar image processing and application , and not only provide better understanding and interpretation for the radar observations , but also produce more new functions , such as terrain height measured technology 自从八十年代中期人们能够获取真实的机载极化sar数据以来，极化sar信息的使用已经证明能够人人改进信号处理的质量和拓展新的应用功能。由于极化sar遥感有着极其重要的军用和民用价值，因而受到世界各国科学家的普遍重视。
The traditional cell fusion methods have biologic inducement and chemical inducement . with the cell fusion having huge potential application on biology , medical science , pharmacy , the scientists from many countries who work on various fields such as physics , electronics , biology , medical science , etc . dived into a large amount of manpower and materials to carry on special research , in the eighties of last century a new cell fusion technology that cell electrofusion , had been developed 传统的细胞融合方法有生物诱导法和化学法,由于细胞融合在生物、医学、药学上的巨大潜在应用,来自物理、电子、生物、医学等领域的各国科学家相继在该领域倾注了大量人力物力进行专项研究,八十年代发展起来的一门新兴的细胞融合技术- -细胞电融合( cellelectrofusion ) 。
Is thorough and the development along with the global change research , the various countries " scientist more and more felt the humanity moves to the environment the influence , in particular humanity ' s survival and the development uses the land use / land cover change to the land development which as well as causes to consider is the whole world environmental variation important constituent and the main reason 随着全球变化研究的深入和发展,各国科学家越来越感觉到人类活动对环境的影响,尤其是人类的生存和发展对土地的开发利用以及引起的土地利用/土地覆盖变化被认为是全球环境变化的重要组成部分和主要原因。
Pvp - i is from coming out to the present , the scientists of various countries prepare , the research of form of a drug , structure analysis , research of pharmacology , toxicity , medicine supersession , sterilization mechanism and dynamics through chemistry , is it have pvp - i only to be security most high to prove , recognize as at supporting clinical only using as human skin disinfectant of mucous membrane extensively Pvp - i从问世至今，各国科学家通过化学制备、剂型研究、结构分析、药理、毒理、药物代谢、杀菌机制及其动力学的研究，证明唯有pvp - i安全性最高，公认为唯一可供临床上广泛用作人体皮肤粘膜的消毒剂。
Self - propagating high temperature synthesis ( shs ) as a new kind of materials fabricating technology has been paid attention by material scientific workers all over the word . as an advance material fabrication technology , it had been appraised by " rapid , simple process , and economic " . however after almost half century of its foundation , this technology is still only been used to product some advanced ceramics powders , which must due to its bad controllability 自蔓延高温合成技术( shs )作为一种新的材料制备技术在二十世纪末受到了世界各国科学家的关注，但是由于shs的反应过程非常快速而其反应机理又非常复杂，这种特点使得shs的过程控制变得非常困难，特别是在其反应动力学机理还不太清楚的情况下许多shs现象难以理解。
But because of the complexity of project structure and the faint internal signal of it , it is too difficult to make and measure those signal relatively . so the research of sensor become the most difficulties technological problem to be solved . how to adopt advanced technologies to solve these old difficulties technological problem is the common subject that present scientists of all the worlds face together 但由于工程结构的复杂性及内部信号的微弱性，使得检测这些信号比较困难，传感器的研制也就成了这项技术最难解决的技术问题，如何采用先进的技术来解决这些古老的技术难题，这是当前各国科学家共同面对的课题。
Because of the complexity of enzymes , model compounds , whose structures and functions are similar to the active sites of enzymes , have been used to investigate the interaction of the enzymes with metal ions and then to study the mechanisms of the interaction of anti - oxidases with heavy metal ions 由于酶的复杂性，选择与酶的活性部位结构和功能相似的模型化合物，来探讨金属离子与相应酶的作用，进而探讨金属离子与植物体保护酶作用机制，已被各国科学家所接受。
