a国产,中文字幕久久波多野结衣AV,欧美粗大猛烈老熟妇,女人av天堂

當前位置:主頁 > 科技論文 > 交通工程論文 >

中國沿海港口煤炭運輸?shù)目臻g分異格局及演化(英文)

發(fā)布時間:2024-05-28 20:42
  Coal is a basic resource and its use guarantees the development of national economies and human society. Thus, coal transportation is an important part of China’s overall transportation system. In this system, ports are the vital transit nodes. This study considered coastal ports in China and analysed the evolution of coal transportation from 1973 to 2013. We focused on the spatial pattern of coal loading and unloading, and summarized the main characteristics and development of the processes. Th...

【文章頁數(shù)】:19 頁

【文章目錄】:
1 Introduction
2 Data and methods
    2.1 Data and samples
    2.2 Evaluation model
3 Spatial evolution of coal loading and unloading at China’s coastal ports
    3.1 Spatial pattern and evolution of coal loading
    3.2 Spatial pattern and evolution of coal unloading
4 Spatial agglomeration of coal transportation at China’s coastal ports
    4.1 The evolution of spatial agglomeration at all coastal ports
    4.2 The evolution of spatial agglomeration at regional ports
5 Functional differentiation of coal transportation at China’s coastal ports
    5.1 Functional differentiation of coal transportation
    5.2 Relationship between coal loading and unloading at coastal ports
6 Conclusions and discussion



本文編號:3983703

資料下載
論文發(fā)表

本文鏈接:http://www.wukwdryxk.cn/kejilunwen/jiaotonggongchenglunwen/3983703.html


Copyright(c)文論論文網(wǎng)All Rights Reserved | 網(wǎng)站地圖 |

版權申明:資料由用戶eecd9***提供,本站僅收錄摘要或目錄,作者需要刪除請E-mail郵箱bigeng88@qq.com
国产亚洲午夜高清国产拍精品 | 亚洲日产精品一二三四区| 极品久久| 亚洲精品久久久狠狠爱小说| 亚洲精品国产一区二区| 国产精品久久久久无码AV| 丰满人妻一区二区三区视频| 四虎影视成人永久免费观看视频 | 国产电影无码午夜在线播放| 亚洲春色AV无码专区在线播放| 中文字幕AV一区乱码| 精品久久久久久久无码人妻热| 国产成人精品999在线观看| 亚洲AV无码久久寂寞少妇| 国产AV午夜精品一区二区入口| 阿拉善盟| 耒阳市| 日女人b| 日韩伦理片在线观看| 久久精品午夜| 亚洲v在线| 午夜精品久久久久久| 午夜福利亚洲| 亚洲一区二区| 国产精品无码久久久久| 蜜臀aⅴ国产精品久久久国产老师| 18禁男女污污污午夜网站免费| 欧美亚洲日本国产综合在线美利坚 | 欧美和黑人XXXX猛交视频| 亚洲国产综合精品 在线 一区 | 久久精品欧美人ooxx| 老四电影网| bbw japanese| 性欧美xxoo特大另类| 有色视频| 午夜福利视频一区| 欧美高清一区二区三区| 国产美女一区二区三区| 色涩av| 公务员艳妇熟女乱| 人妻少妇久久|