单语范例（未经PONS编辑处理）
英语
- Care was taken to maintain vertical profiles every five feet and to keep a clean floor in the trench going down to the hardpan.en.wikipedia.org
- Other soils may have an impervious layer of mineralized soil, called a hardpan or relatively impervious rock layers may underlie shallow soils.en.wikipedia.org
- Its surface is hilly upland made of shaly loam atop hardpan, while the valleys consist of gravelly loam and alluvium.en.wikipedia.org
- He soon noticed the phenomenon referred to as hardpan (the creation of a water resistant soil layer).en.wikipedia.org
- The depth to hardpan ranged from 1 foot to 6 feet.en.wikipedia.org
- Common salts such as sodium ions contained in wastewater can fulfil this role and lead to a localized hardpan in some soil types.en.wikipedia.org
- An area can have layers of sandy soil, fractured bedrock, clay, or hardpan.en.wikipedia.org
- This type of landscape typically has a shallow basement layer such as bedrock, hardpan, claypan, or densely bedded gravel.en.wikipedia.org
- The stream meander belt cuts below the hardpan.en.wikipedia.org
- The surrounding area has leached, gravelly-sandy soils with layers of hardpan, covered by open sand, large areas of heathland and extensive coniferous forest.en.wikipedia.org
是否要添加一些单词、短语或翻译？
请发送新条目。浏览词典
英语