SEIL backpack by Lee Myung Su USES LED lights to display traffic signals.
(韩国设计师，官网在此)设计的SEIL背包利用LED灯来显示交通信号。
Meanwhile, analyze the experimental result, do attack experiment use natural soil, air-dry soil, stoving soil and preparation seil, observe the difference.
同时，对试验结果进行了分析，土样采用天然土、风干土、烘干土、制备土进行击实试验，以观察试验结果的区别。
Meanwhile, analyze the experimental result, do attack experiment use natural soil, air-dry soil, stoving soil and preparation seil, observe the difference.
同时，对试验结果进行了分析，土样采用天然土、风干土、烘干土、制备土进行击实试验，以观察试验结果的区别。
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