hardpan

英式音标：['hɑ:dpæn]

美式音标：['hɑdˌpæn]

词汇分类：港口及航道工程专业英语,Word Menu

词义：

n.

（软土下面的）硬质地层，黏土层，砂砾层；硬盘；

英英释义

hardpan[ 'hɑ:dpæn ]

n.crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions

同义词：caliche

用法：

权威例句

hardpan

hardpan:

Hardpan

HARDPAN IN SOILS OF SEMI‐ARID WESTERN AUSTRALIA

Hardpan and microrelief in certain soil complexes of California

Influence of hardpan layers on arsenic mobility in historical gold mine tailings

A preliminary investigation of hardpan horizons in north-west New South Wales.

Performance of an oscillating subsoiler in breaking a hardpan

Residual effects of slit tillage and subsoiling in a hardpan soil

The effects of hardpan layers on the water chemistry from the leaching of pyrrhotite-rich tailings material

Mobility and retention of trace elements in hardpan-cemented cassiterite tailings, north Queensland, Australia

Geochemistry of calcretes (calcic palaeosols and hardpan), Coimbatore, Southern India: Formation and Paleoenvironment

Mineralogy of the hardpan formation processes in the interface between sulfide-rich sludge and fly ash: Applications for acid mine d...

同义词：rock-bottom,nadir,claypan

造句：

1. Prices have reached (the) hardpan.

物价已经降到了最低点。

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2. 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。

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3. 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。

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4. The study provided the variation range of paddy field hardpan roughness and the effective frequency of the hydraulic copying system.

试验研究提供了水田沟底不平度变化范围以及可以实用的插秧机液压仿形系统的仿形频次。

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5. The study provided the variation range of paddy field hardpan roughness and the effective frequency of the hydraulic copying system.

试验研究提供了水田沟底不平度变化范围以及可以实用的插秧机液压仿形系统的仿形频次。

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