已收录 272960 条政策
 政策提纲
  • 暂无提纲
Diffraction Characteristics of Small Fault ahead of tunnel face in coal roadway
[摘要]
[发布日期]  [发布机构] 
[效力级别]  [学科分类] 天文学(综合)
[关键词] Coal roadway;Small fault;Diffraction;Reflected channel wave [时效性] 
   浏览次数:41      统一登录查看全文      激活码登录查看全文