粒度一般是向上递减的.There is a general decrease in grain size upward.我们必须用具有相当数量的最小颗粒的粒度.We must use the smallest size of solid present in appreciable quantity.从具有不同骨料粒度的立方浇注块中切出方形板块.Square slabs were cut from cubes cast with var...
Old World sandpiper with a curved bill like a curlew.东半球矶鹬,嘴巴弯曲象麻鹬.a large bull with curved horns长着弯曲犄角的大公牛The water curved round the rocks in great bursts of foam.水流撞击岩石，产生大量泡沫。The covariant equation of plane motion bod...