英 [ˈhɑːdˌpæn] 美 [ˈhɑːrdˌpæn]
n. 硬质地层；粘土层；最低点
hardpan /ˈhɑːdˌpæn/
名词 a hard impervious layer of clay below the soil, resistant to drainage and root growth 硬质地层
crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions
同义词： caliche
硬土层
硬盘
硬磐
... hardpan 砂砾层 hardpan 硬质地层 hardpaste 硬瓷 ...
... hardnesstest硬度试验 hardpan硬土层 hardware金属构件 ...
... 硬自励，硬自激：hard self excitation 硬质土;底价：hardpan 硬质绝缘：rigid insulation ...
... Hard stone 硬岩 Hardpan 硬土墙 Hardness 硬度 ...
硬质地层；[土壤]粘土层；最低点
Prices have reached (the) hardpan.
物价已经降到了最低点。
The limestone–and–clay and sand-and-clay soil over a hardpan and iron–dross subsoil allows excellent draining.
庄园粘土层上的石灰石泥和沙泥土以及心土钢渣形成了很好的排水。
For the need of earthquake microzonation some studies on the dynamic properties of hardpan in west Anhui were conducted.
本文结合地震小区划的需要对皖西硬粘土的动力特性进行了一些研究。