In the US Soil Taxonomy, an order of soils found in arid environments. These soils have very little organic matter in their surface horizons, but may contain calcium carbonate or gypsum, and/or soluble-salt accumulations.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。