In the soil classification developed by the Soil Survey for England and Wales, a soil that is subject to long periods of waterlogging. Soil horizons in a gley soil may be grey in colour, with mottling.
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。