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本意匠に係る攪拌翼は、現地盤に地盤改良材を注入して地盤を改良するとき、地盤と改良材を均一に混合攪拌するための攪拌翼である。The stirring blade according to this design is a stirring blade for uniformly mixing and stirring the ground and the improved material when the ground improving material is injected into the local ground to improve the ground.