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全套管钻孔机
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全套管钻孔机
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潜水式成孔机
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full casing drill rig
全套管钻孔机
能抱紧下端装有切削刀齿的套管、边回转边将其压入或拔出地下进行钻孔灌注桩作业的成孔机械。又称贝诺特钻孔机。
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social engineering attack
Social Entrepreneurship
social environment
social environmental monitoring organization
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social environment assessment of museum development
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