砾石的例句（砾石在句子中的用法）

• They may form concentrated pockets in gravels. 它们可能在砾石堆积物中形成富集的矿囊.
• Gravel strata is a kind of typical instable layer in drilling engineering. 卵砾石地层是钻探工程中常见的一种典型的不稳定地层.
• Two young men were racing motorcycles on the loose gravel. 两个小伙子正在松散的砾石路面上赛摩托车。
• Sandstone and conglomerate are the consolidated equivalent of sand and gravel. 砂岩和砾岩分别是砂和砾石固结的产物.
• In the extreme case the boxwork collapses, forming a breccia. 在特殊情况下,蜂窝坍塌, 形成角砾石.
• Two young men were racing motorcycles on the loose gravel... 两个小伙子正在松散的砾石路面上赛摩托车。
• The gravel pits have been landscaped and planted to make them attractive to wildfowl... 砾石采掘坑已进行了景观美化并种上了草木，希望能吸引野禽的到来。
• It is wise to start infilling with a layer of gravel for drainage. 先铺上一层利于排水的砾石是个明智的做法。