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The step artificial reef of pyramid shape
The step artificial reef of pyramid shape
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机译:金字塔形的阶梯式人工礁
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摘要
A first flat surface transplanted with algae; A second flat surface at a lower portion of the first flat surface, the second flat surface being wider than the flat surface; A third flat surface having a larger size than the second flat surface; To a stepped pyramid-shaped mandibular chisel.
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