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针对藏南地区江北公路沙害问题，某研究所于该地区进行石方格沙障由石头组成的方格状拦沙设施防风固沙效益研究。下图示意风速为11 Ms时石方格 Template




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sketch 3707 The Thinker
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sketch 5124 Tony Tony Chopper by 陳一夫
sketch 20840 Dog by Laur Ūūtiis

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sketch 2965 Flapjack by Farzin Hedayatzadeh
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