硬土 meaning in English

firm bottom
firm ground
firm soil
hard bottom
hard pan
hard soil
pan soil
shot soil

They cut straight downwards through the hard, brush covered crust .
他们穿透长着灌木的坚实的硬土一直向下掘。
Physical and biological science wilted and died on the stony soil of roman prosperity .
物理和生物科学是在罗马昌盛的硬土上枯萎而死的。
The reliability of the method was examined with the actual earthquake records and it indicated that by using the present approach not only the liquefied sites and the stiff non - liquefied sites were identified , but also the soft non - liquefied sites were detected
结果表明：以此为基础建立了一套应用本文提出的方法，不仅成功地识别了液化场地和非液化硬土场地，也成功地识别了软土但非液化的场地。
Based on the comprehensive statistical analysis of inelastic displacement ratios , the regression equations of - r - t about the strength reduction coefficient and inelastic displacement ratios are obtained . the effects of soil condition , earthquake magnitude , epicenter distance , damp ratios and hysteretic characteristics are considered in detail
通过对理想双线性体系的均值弹塑性位移比与强度折减系数进行了统计分析与数值拟合,建立了两大类场地土(硬土、软土)下的- r - t回归公式。