short-hole blasting in urban area的意思|示意
美 / /
英 / /
城区短孔爆破
short-hole blasting in urban area的网络常见释义
城镇浅孔爆破 露天浅孔爆破surface short-hole blasting 城镇浅孔爆破short-hole blasting in urban area 复杂环境深孔爆破deep-hole blasting in complicated surroundings ..