Experts say warm days, cool nights and a medium soil temperature are the best conditions for growing carrots that taste great.
专家称白天温暖、夜间凉爽的天气环境加上适中的土壤温度是种植口感良好的胡萝卜的最佳条件。
Based on the constitutive framework of unsaturated soils established by the continuum porous medium soil mechanics, an elastoplastic model for unsaturated soils in triaxial stress state is formulated.
基于连续介质土力学的本构模型框架，提出了一个三轴应力状态下的非饱和土本构模型。
The primary growing medium, what the plants draw nutrients from, is actually soil, not water.
主要的生长介质，也就是植物吸收营养的来源，实际上是土壤，而不是水。
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