浅谈高速公路边沟排水设计 - xzbu.com 中国论文网 关键词:高速公路;边沟;排水 [gap=506]Keywords: highways; and Ditches; drainage
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channels and ditches 方〉∶水沟
contaminated rivers and ditches 排污河渠
Dig Ditches And Level Land 开沟平地
Agriculture siphons off more than 65 percent, half of which is lost in leaky pipes and ditches.
农业用掉了65%,但是其中的一半白白损失在破烂的输水管和水渠中了。
American plant with roundish heart-shaped or kidney-shaped leaves; usually rooted in muddy bottoms of ponds and ditches.
一种美国水生植物,叶肾形或圆心形,佛焰苞具有短的柄或无柄;通常扎根在池塘和水沟的底部淤泥中。
Gas-phase oxidation treatment resulted in distrihution of some micro-pores and ditches at the carbon fiber surface and led to stress concentration therefore, the composite strength was not high.
结果表明:空气氧化处理碳纤维表面形成微孔和刻蚀沟槽,容易形成应力集中,复合材料的强度不高;
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