用深孔微差爆破技术成功地拆除了复杂环境下的四个大体积桥墩。
By use of deep-hole millisecond blasting technique, four large-volume bridge piers under complicated circumstances were successfully demolished.
用深孔微差爆破技术成功地拆除了复杂环境下的四个大体积桥墩。
By use of deep-hole millisecond blasting technique, four large-volume bridge piers under complicated circumstances were successfully demolished.
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