The behaviour of this waste or broken rock is similar to that of a clean sand or gravel . 这种废石或碎石的行为与洁净的砂石或砾石相类似。
The hall door and the gravel drive were dimly noted stages in his headlong retreat . 在他落荒而走的时候只隐约记得经过前门和砾石铺的车路。
The components to be considered in this book include boulders, gravel, sand, silt and clay . 本书所考虑的组成部分包括漂砾，砾石，砂，粉土和粘土。
Small gritstone-built houses and cottages of a somewhat sordid aspect stood on either side of the street . 街道两边是外表有些肮脏的粗砾石建成的小屋和村舍。
"good-night, alexandra," she called back in a strained voice, running down the gravel walk . “晚安，亚历山德拉，”她扭回头用极不自然的声调说，顺着砾石路跑去。
Gravel-size material, except for broken shells which are quickly worn down, is rarely available on low shores . 相当于砾石级的物质，除了迅速被磨细的贝壳碎片外，是极少见于低位海滨上的。
In drainage of agricultural lands, a filter or gravel envelope is used to prevent the entrance of fine sand and silt into the drains . 在农田排水中常常采用砾石或过滤层来防止粉细砂和泥沙进入排水沟。
Joesting has used the magnetometer to locate gold in alaska, taking advantage of the close association of gold and magnetite in gravels . 乔斯丁利用砾石中金子与磁铁矿密切的共生关系，曾经用磁力仪在阿拉斯加寻找金矿。
The drive was decorated with several loads of gravel, so that it became a thing of pride to the successor of an ancient and lackadaisical race . 车道上铺上了许多砾石，这样，这条车道就成为这个古老而无精打采的家族的一件值得骄傲的事了。
Gravel paching method for sand control in cased hole 油井套管内砾石充填防砂工艺方法
