Many phenomenon due to deep dip angle coal seam mining are still explained very well. There are a lot of deep dip angle coal seam mining district in China, the problem of miming subsidence is very general, so the research is of theory mining and practical value.

實(shí)踐中韩国无码视频免费观看，我國很多礦區(qū)有大量的傾斜煤層存在，傾斜煤層開采沉陷與變形預(yù)計(jì)問題普遍存在2021国内自拍偷拍，需要我們對(duì)這類礦山的地表移動(dòng)規(guī)律問題進(jìn)行全面研究色惰中老年妇女毛片视频，因而該項(xiàng)研究具有重要的理論意義和生產(chǎn)實(shí)用價(jià)值。

The policy decisions were worked out on the basis of the digital elevation model, analysis of space, use of space database technology and theory of policy decision system, preserved space data of subsidence area of mining district and data experience of land reclamation, so as to acquire the rational land reclamation plans of the mining district and to provide information for environment evaluation.

從礦區(qū)塌陷坑的數(shù)字高程模型入手国产精品无码你懂的，通過空間分析国产精品无码久久久久，利用空間數(shù)據(jù)庫技術(shù)和決策系統(tǒng)理論，保存礦區(qū)塌陷坑空間數(shù)據(jù)和土地復(fù)墾經(jīng)驗(yàn)數(shù)據(jù)來進(jìn)行決策欧美精品a，以期取得科學(xué)合理的礦區(qū)土地復(fù)墾方案欧美日韩人妻在线视频，并且可為環(huán)境評(píng)價(jià)提供信息欧美精品日韩一区二区。

The man credited with "inventing" sustainable development was a miner, Oberberghauptmann Johann-Karl vonCarlowitz, who published his book "Sylvicultura oeconomica" Von Carlowitz was the head of the mining administration of the famous silver-mining district in Freiberg, Saxony.

人相信"發(fā)明"可持續(xù)發(fā)展是礦工， Oberberghauptmann Johann 卡爾馮 Carlowitz网站免费看你懂的，出版他的書"Sylvicultura oeconomica"馮Carlowitz 是著名銀采礦區(qū)在Freiberg人人干人人cao，薩克森的采礦管理的頭韩国午夜理论片在线观看手机。

alkaline mineral water：礦泉水餐食飲料

66667礦泉地理海洋,水資源spa | 66668礦泉水餐食飲料alkaline mineral water | 66669礦區(qū)地理陸地mining district

Mining district use fee：礦區(qū)使用費(fèi)

Educational surcharge 教育費(fèi)附加 | Mining district use fee 礦區(qū)使用費(fèi) | Cultural construction fee 文化事業(yè)建設(shè)費(fèi)