首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1642篇
  免费   317篇
  2023年   2篇
  2021年   16篇
  2020年   23篇
  2019年   113篇
  2018年   84篇
  2017年   102篇
  2016年   138篇
  2015年   92篇
  2014年   96篇
  2013年   369篇
  2012年   97篇
  2011年   102篇
  2010年   92篇
  2009年   56篇
  2008年   75篇
  2007年   73篇
  2006年   50篇
  2005年   30篇
  2004年   36篇
  2003年   35篇
  2002年   25篇
  2001年   25篇
  2000年   37篇
  1999年   7篇
  1998年   16篇
  1997年   24篇
  1996年   15篇
  1995年   21篇
  1994年   15篇
  1993年   5篇
  1992年   7篇
  1991年   3篇
  1990年   2篇
  1989年   5篇
  1988年   4篇
  1987年   8篇
  1986年   3篇
  1985年   6篇
  1984年   2篇
  1983年   3篇
  1982年   6篇
  1981年   3篇
  1980年   7篇
  1979年   4篇
  1977年   7篇
  1976年   4篇
  1975年   2篇
  1974年   5篇
  1968年   2篇
  1951年   1篇
排序方式: 共有1959条查询结果,搜索用时 31 毫秒
1.
2.
China has officially become a predominantly urban country, with over 50% of the population now registered as urban residents. Its urbanization process has been described as the most managed in human history. The Chinese government manages the building of new cities, regulates the housing of displaced people and controls squatters. As an historically poorer area, the west of China has been the target of ongoing efforts at infrastructural development. Describing urbanization as managed however masks the conflicts and contradictions involved in a process which is far from smooth. Although villagers are usually seen to be largely the powerless victims of these initiatives, it is clear that many try to take advantage of the situation, while others are unable to do so. Based on recent fieldwork and eight years of visits to one village undergoing urbanization, this article looks at the complex dynamics involved and at the moral battleground which they lay bare.  相似文献   
3.
4.
5.
6.
7.
8.
A Roman wreck, named Plemmirio B[1]i, lies on the rocky talus below the southern cliffs of Capo Murro di Porco, near Costa Bianca del Plemmirio (Penisola della Maddalena), prov. Siracusa, Sicily. The cargo of amphoras and iron bars, relatively well-preserved, is situated between 22 m and 47 m depth. Following brief examinations in 1974–1982, a University of Bristol expedition spent four weeks surveying the site in July-August 1983[2] This paper presents an interim summary of these campaigns; a comprehensive report will be published after completion of excavations at the site[3]. The archaeological deposit at Plemmirio B is characterized by concentrations of fragmented amphoras. There is no direct evidence for the structure of the ship, much of which may have disintegrated during the initial wreck process, but study of the artefact distribution suggests a vessel of fairly large capacity. The amphora consignment (which may have numbered no more than 200) comprised cylindrical African containers, 80% of which were form Africana 2A and 20% Africana 1[4] w. The Africana 2A amphoras had internal resinous linings, and so may have contained a fish product rather than olive oil. Other amphoras exposed on the site were at least one Mauretanian Dressel 30 (Keay type 1) and two possibly intrusive amphoras of unclassified types. Ferrous concretions contained voids (hollow casts) which may once have been about 39 wrought iron bars, of two distinctive shapes. These, and several other concretions of unidentified forms, may represent a consignment of iron originally weighing approximately one tonne. Other finds from the wreck are two cooking pots, a small bowl or cup, a sounding lead, three fragments of tegula rooftiles, and two small stone blocks. One of the cooking pots confirms a date for the wreck based on the amphora association of circa AD 180–250, most likely in the first decade of the 3rd century. The amphora assemblage belongs to an important phase of commerce from North Africa represented by at least 20 known wreck cargoes; however, few of these sites have been scientifically recorded or are as closely dated as Plemmirio B, and the diversity of container types and cargo consignments on this wreck is of particular interest.  相似文献   
9.
10.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号