seam blast造句

"seam blast"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 blast in a sentence. 用seam blast造句挺难的

相邻词汇

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