短語(yǔ)詞組短語(yǔ)reverse soft -landing 反向軟著陸soft -landing head 軟降落磁頭soft spacecraft landing [航]航天器軟著陸soft lunar landing [航]月球軟著陸Direct soft -landing 直接軟著陸soft lunar landing dynamics 軟著陸動(dòng)力學(xué) 返回 soft landing