SOIL IMPROVEMENT EQUIPMENT

PROBLEM TO BE SOLVED: To provide soil improvement equipment which does not depend on the expansion limit of sheet member or the maximum amplitude of the vibrating amplitude. SOLUTION: This soil improvement equipment is a hollow rod, and the rod 12 is spirally surrounded by vanes and this rod is a pi...

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Bibliographische Detailangaben
Hauptverfasser: HAMADA NAOHITO, WATANABE NORIO
Format: Patent
Sprache:eng
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