stones and sand 石头和沙子
ships carrying sand and stones 砂石运输船舶
screening stones and sand 分离石块和沙子
Moreover, Jigging Method also can achieve a good result in processing primary ores bearing gold, tantalum niobium, titanium, zirconium and chrome and sand stones.
跳汰法在处理含金，钽铌、钛、锆、铬的原生矿石和砂石的选别亦能获得良好效果。
It is the key problem for oil and gas exploration of the Formation to forecast the distribution of advantageous caprocks and to correlate high quality reservoir sand stones accurately.
其油气勘探的首要问题是优质储集砂体的精确对比及有利盖层分布预测。
Long-ago builders could have attached wooden poles to the stones and rolled them across the sand.
很久以前，建筑工人可以在石头上绑上木杆，然后让它们在沙子上滚动。
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