【正】 当前,以信息技术、材料科学、生物工程与海洋工程等新兴技术为前导的新的技术革命,正在影响着科学技术的各个领域。科学技术已成为生产进步的决定性力量,知识和人才已
<正>A technique for obtaining a three-dimensional distribution of received pho- tons in Hα flares in the solar atmosphere is presented.It is well known that du
【正】 随着教育科研的发展,考试已成为一门科学,对于学生成绩的处理,也应当由笼统的分析上升为科学而严密的分析。本文主要讨论考试成绩评定以后,对考试质量如何分析的问题,
The initial period of a pulsar is an important factor in our understandingof the formation of neutron stars and of the nature of the equation of state of neutro
小说教学应抓住"人物、情节、环境、叙述、虚构、主题"这六个关键词。小说的情节教学要解决四个问题:第一,明确什么叫小说的情节;第二,弄清小说情节结构的类型;第三,理解小说
For a composite system of gravitationally coupled stellar and gaseous discs, we have carried out a linear stability analysis for axisymmetric coplanar perturbat
A theoretical model for explaining the O'Connell effect of close binarystars is given based on the hypothesis that the circumstellar material of a binarysys
国家重点生态功能区与重要生物多样性保护区，武陵山绿色经济发展高地、重要生态屏障、生态民俗文化旅游带和扶贫开发示范区，全市少数民族集聚区，
<正>An atlas of high resolution (R = 60 000) CCD-spectra in the wavelength range 3500-5000A is presented for four objects in metallicity range -3.0 < [Fe/H] < -
自古以来,一代又一代文人墨客从三峡走过.他们从中汲取智慧,触发灵感,感悟人生,抒发情怀,留下了万千诗篇.它不仅构成了三峡美妙的人文景观,也为中国诗学的发展写下极其光辉的