blast-hole springing
[新英汉石油技术词典]
blast-hole springing炮眼底扩大
是什么意思,blast-hole springing的解释,blast-hole springing的翻译
[石油英汉词典] blast-hole springing
blast-hole springing
[新英汉石油技术词典]
blast-hole springing是什么意思,blast-hole springing的解释,blast-hole springing的翻译
[石油英汉词典] blast-hole springing