Vibration-reducing technique in driving Longqiao tunnel on Chongqin-Huailai railway by drilling and blasting method是什么意思 Vibration-reducing technique in driving Longqiao tunnel on Chongqin-Huailai railway by drilling and blasting method怎么读-字典翻译

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Vibration-reducing technique in driving Longqiao tunnel on Chongqin-Huailai railway by drilling and blasting method

Vibration-reducing technique in driving Longqiao tunnel on Chongqin-Huailai railway by drilling and blasting method是什么意思 Vibration-reducing technique in driving Longqiao tunnel on Chongqin-Huailai railway by drilling and blasting method怎么读

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