沥青混合料具有非均质的、各向异性的 、 非线性的以及变异性较大的特点.Asphalt concrete is a non - homogeneous material that has anisotropic property, nonlinearity and variability.对含泥很少 、 相当均质的岩层最常用的方法是利用小圆柱体泼姆塞样品.The method most used on clean, fairly unif...
出口商品不需要交购买税。Purchase tax was not payable on goods for export.福特公司想出了一绝妙的主意：付给工人足够的薪水去购买汽车。Ford had the bright idea of paying workers enough to buy cars.每人可购买的票的限额已经由四张降至两张。The quota of four tickets per person had been re...