The free iron oxide content in clay in every mountain is higher in the mountain yellow soil than that in the mountain latored soil and mountain red soil.
粘粒的游离氧化铁含量，每个山体均是山地黄壤高于山地红壤和山地赤红壤。
The paper illuminates the existing state of free iron oxide in red clay in the view of collochemistry, pointing out the interaction mechanism between them is the adsorption of collochemistry;
从胶体化学的角度阐明游离氧化铁在红粘土中的赋存状态，指出它们之间的相互作用机理是胶体化学吸附作用；
The assumption is made that if there is no detectable free iron, the metal surface is clean enough for a uniform oxide film to develop.
假定如果没有探测到游离铁，则金属表面就是足够清洁以形成均一的氧化物膜的。
The assumption is made that if there is no detectable free iron, the metal surface is clean enough for a uniform oxide film to develop.
假定如果没有探测到游离铁，则金属表面就是足够清洁以形成均一的氧化物膜的。
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