1. classification of closed surfaces 
   闭曲面的分类
2. Article 21 If a mine is to be closed down, a report must be prepared with information about the mining operations, hidden dangers, land reclamation and utilization, and environmental protection, and an application for examination and approval must be filed in accordance with relevant State regulations. 
   　第二十一条　关闭矿山，必须提出矿山闭坑报告及有关采掘工程、不安全隐患、土地复垦利用、环境保护的资料，并按照国家规定报请审查批准。
3. Changsha Mine Research Institute 
   长沙矿山研究院
4. Datong Coal Mine Area 
   大同矿区
5. environmental protection for mine 
   矿山环境保护

查看更多例句 相关情景会话

• 1. 关闭的矿山
  closed lamp mine 多尘瓦斯矿...closed mine 关闭的矿山...closed type bearing 封闭式轴承
  www.shuyu.org - 相关搜索
• 2. 关闭嘚矿山
  clos振动干燥机ed lamp mine 多尘瓦斯矿...closed mine 关闭嘚矿山...clos振动干燥机ed type bearing 封闭式轴承
  www.yfdry.cn - 相关搜索