The paper has put forward and testified four utilizable aggregate gradation.
提出并驗證了四種具有實用價值的集料級配組成.
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Flexible and utilizable as it is, waterscape has much effect on space organization and garden coordination.
它具有靈活、巧于因借等特點, 能起到組織空間、協(xié)調(diào)園景變化的作用.
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