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seam blasting造句

"seam blasting"是什么意思  
造句与例句手机版
  • Talking about the roof management at slope thick seam blast mining surface
    浅谈倾斜厚煤层炮采工作面的顶板管理
  • It's difficult to see seam blasting in a sentence. 用seam blasting造句挺难的
如何用seam blasting造句,用seam blasting造句seam blasting in a sentence, 用seam blasting造句和seam blasting的例句由查查汉语词典提供,版权所有违者必究。