| 摘要 |
A novel and improved soundproof wall is disclosed comprising a main wall rising from the ground, a first branch wall provided atop the main wall and inclined toward a noise source and a second branch wall provided atop the main wall and inclined away from the noise source. In addition, a subordinate branch wall is provided on at least one of the first and second branch walls and extending in a direction other than that of the branch wall.
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