seam gateway

 
  • 煤巷

seam gateway的用法和样例:

例句

  1. Outburst prevention technique of excavating in coal seam will be directly concerned colliery safety production and excavates taking over.
    摘要突出煤层煤巷掘进防突直接关系到煤矿的安全生产和采掘接替。

seam gateway的相关资料:

临近单词

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