Research on Charge Weight of First Hole-Springing Explosion in Deep-hole Springing Blasting

 
  • 深孔药壶爆破初次爆扩用量药研究
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  • 深远海浮式风电平台 - deep-sea floating wind power platform
  • 京雄高速公路 - Beijing-Xiongan expressway
  • 农业及相关产业增加值 - the added value of agriculture and related industries
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