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顶管法
借助于主顶千斤顶(油缸)及管道间的推力,把工具管或掘进机从工作坑内穿过土层一直推到接收坑内吊起,再将紧随其后的管道埋设在两坑之间的非开挖铺设地下管道的施工方法。
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Lawrence Vambe
Lawrencium
lawrencium
Lawren Stewart Harris
Laws about Library of Congress
laws amendment during Late Qing Dynasty
laws and regulations for concentrator design
laws and regulations of soil and water conservation
laws and regulations on biosafety and biosecurity
Laws and Regulations on Digital Publishing
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Laws of Burgos
laws of development of natural science
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laws of Han Dynasty
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