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| Subject | English | Chinese |
| environ. | gravel extraction Obtaining a mixture of coarse sand and small water- worn or pounded stones, (used for paths and roads and as an aggregate) from the earth | 砂石开采，砂石挖掘 (从地层中获取粗砂和细小的受水磨蚀或磨碎之石头混合物，通常用作舖设道路的材料。) |
| tech. | gravel extraction | 砾石提炼 |
| tech. | gravel extraction and preparation | 砾石采矿与制备 |
| tech. | gravel extraction plant | 采矿厂 |
| ecol. | sand and gravel extraction | 砂石精选 |