| 单词 | land pebble phosphate |
| 释义 | land pebble phosphate [`land ¦peb·ǝl `fäs´fāt] GEOLOGY A pebble phosphate in a clay or sand bed below the ground surface; a small amount of uranium is often present and is recovered as a by-product; used as a source of phosphate fertilizer. Also known as land pebble; land rock; matrix rock. |
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