The lack of humus and the excessive leaching make this soil almost useless for agricultural purpose . 缺少腐殖质和过度淋滤使这种土壤对农业几乎无用。
2.
Leaching characteristics of hazardous trace elements in coal and ash 煤及其燃烧产物中有害痕量元素的淋滤特性研究
3.
One of or more systems of larger openings usually occur in carbonate rocks as a result of leaching or fracturing of the primary rock material 由于原始岩石的淋滤或压裂，导致碳酸盐岩石中产生了一种或多种大的开孔。
4.
Standard test method for accelerated leach test for diffusive releases from solidified waste and a computer program to model diffusive , fractional leaching from cylindrical waste forms 固化废料中扩散释放物加速浸出试验,模型扩散的计算机程序和从圆柱形废料状态中分离淋滤的标准试验方法
5.
The cadmium content in weathering phosphate rock is nearly two times of original phosphate rock , this demonstrates that under the surrounding of oxidization in the surface of the earth , cadmium is oxidized under the action of acidic water solution and is displaced distinctly 白果坪磷矿风化磷矿中的镉含量较原生磷矿镉含量高近一倍，表明在地表氧化环境下，镉元素在酸性水溶液的作用下被氧化淋滤发生了明显迁移。
6.
The formation process of green loose stone , be called an outside to living to pour to filter on the geology because of , matching these conditional rocks is the volcano of the acidity jet of rock with contain rich mineral apatite of granite , be matching these conditions to become on the earth green loose the mineral of stone is rare scarcity , is a very precious rare jewelry 绿松石的形成过程,地质上称为外生淋滤成因,符合这些条件的岩石是酸性的火山喷出的岩和含富矿物磷灰石的花岗岩,在地球上,符合这些条件成为绿松石的矿物罕见稀少,是很珍贵的稀有珍宝
7.
Combining with practice of china ' s uranium ore heap leac hi ng , this paper proposes main ways and suitable technologies in the fields of emp hasizing feasib ility research , adop - ting strengthened technologies , improving equipment le vel , op timizing control technological factors and developing application range and so o n , which include adopting acid - curring and ferric sulphate - tric kle leaching process , bacteria heap leaching , countercurrent heap leaching , sele cting advanced material of heap bottom , developing large mechanized heap constru ction equipments and methods , popularizing drip i rrigation distributing solution , optimizing heap leaching process parameters , as we ll as developing recovery equipments suited to heap leaching , etc , in order to i n crease leaching rate , reduce heap leaching period and achieve more economic bene fits 结合我国铀矿堆浸实际，在重视堆浸可行性研究、采用强化堆浸技术、改进堆浸装备水平、严格工艺条件及拓宽堆浸的应用范围等方面提出一些有效途径及适用技术，包括采用拌酸熟化-高铁淋滤浸出、细菌堆浸、制粒堆浸、逆流堆浸，选用优质底垫层材料，研制大型机械化筑堆方法和设备，推广滴灌式布液，优化堆浸工艺参数，以及开发堆浸相配套的回收设备等，以提高浸出率、缩短堆浸周期，获得更大的经济效益。
8.
In this paper , regarding the analysis of stability factors of majiatian tailings fill dam , namely regional geologic structure , rock - soil body of dam foundation , poor geology phenomenon , leach consolidation and chemical consolidation of tailings , seepage water of dam body and king - size flood water of majiatian tailings reservoir , a preliminary demonstration on probability of earthquake liquefaction and seepage failure of dam bodys tailings sand soil , of the dam body failure resulted from abutment landslide and of the flood water overflowing crest , as well as on the contribution of leach consolidation and chemical consolidation of tailings to the stability of dam body has been performed 通过对马家田尾矿库区域地质构造、库区不良地质观察、尾矿淋滤固结和化学固结、坝体渗透水和库区特大洪水等因素对马家田尾矿堆积坝体稳定性影响的分析，初步论证了坝体尾矿砂土的地震液化、渗透破坏、坝肩滑坡使坝体失稳和洪水漫顶的可能性，以及尾矿淋滤固结和化学固结作用有助于坝体的稳定性。
9.
In this paper , regarding the analysis of stability factors of majiatian tailings fill dam , namely regional geologic structure , rock - soil body of dam foundation , poor geology phenomenon , leach consolidation and chemical consolidation of tailings , seepage water of dam body and king - size flood water of majiatian tailings reservoir , a preliminary demonstration on probability of earthquake liquefaction and seepage failure of dam body ' s tailings sand soil , of the dam body failure resulted from abutment landslide and of the flood water overflowing crest , as well as on the contribution of leach consolidation and chemical consolidation of tailings to the stability of dam body has been performed 通过对马家田尾矿库区域地质构造、库区不良地质观察、尾矿淋滤固结和化学固结、坝体渗透水和库区特大洪水等因素对马家田尾矿堆积坝体稳定性影响的分析，初步论证了坝体尾矿砂土的地震液化、渗透破坏、坝肩滑坡使坝体失稳和洪水漫顶的可能性，以及尾矿淋滤固结和化学固结作用有助于坝体的稳定性。
