这是因为氧化磁铁矿蜕变。
科学家接着又往烧瓶内加入粉末状磁铁矿和火星上现有的一种氧化铁。
The scientists then added powdered magnetite, an iron oxide present on Mars, to the flasks.
磁铁矿颗粒氧化按温度划分为两段，在较低温度下主要是铁离子扩散，较高温度下氧离子扩散的扩散能力增强。
Oxidation of magnetite grains is divided into tow stages, according to temperature, and iron ion diffuses at lower temperature and diffusion amount of oxygenic ion increases at higher temperature.
利用阿伦尼乌斯公式分析了磁铁矿原料辊磨前后球团氧化反应的活化能。
The activation energy of magnetite materials of pellet which were pretreated with and without high pressure grinding is studied using Arrhennius Law in this paper.
可以看出，该碳酸盐的存在大大增加了足够的时间长度为磁铁矿氧化所需的发生。
It can be seen that the presence of the carbonate significantly increases the length of time required for sufficient magnetite oxidation to occur.
树枝状晶体主要是由铁的氧化物——磁铁矿组成。
The branch shape crystallite is mainly composed of iron oxides, i. e. magnetite.
对冀东磁铁矿球团焙烧的氧化机理进行了研究。
The oxidation mechanism of Jidong magnetite pellets was studied.
然而，磁铁并不一定全是由金属或金属氧化物制成。
However, magnets do not necessarily have to be made of metals or metal oxides.
本实验以颅外安置小磁铁吸附经舌下静脉注入四氧化三铁粉的方法建立了一种脑缺血所致血管性痴呆的大鼠动物模型。
The vascular dementia model in rats was reproduced by injecting Fe particles into the sublingual vein, after fixing a magnet on the skull surface.
不规则状自然铁外壳磁铁矿可能由黄铁矿氧化而来。
It is considered that the magnetite of outer crust of irregular native iron has been oxidized by pyrite.
本文介绍用三种不同成分的硫酸渣，通过物理、化学和低温氧化处理，制成性能优良的永磁铁氧体。
The excellent hard ferrite is prepared by the three kinds of the Dregs of sulfuric acid through physical and chemical treatment as well as oxidizing treatment in lower temperature.
对于磁选来说为什么磁铁矿的氧化亚铁含量越高就越好？
Three, for magnetic separation for the ferrous oxide content why magnetite taller jump over?
黑的铁氧化物(磁铁矿)：黑的铁氧化物发现有用的，特别在半金属的配方作为提高冷的摩擦力。在半金属的配方的通用的成分。
Black Iron Oxide (Magnetite) Black Iron Oxide is found useful, especially in semi-metallic formulas as an agent for elevating cold friction.
经x -衍射分析粉煤灰中的含铁矿物主要是以赤铁矿和磁铁矿的状态存在，少量以磁赤铁矿、镁铁尖晶石以及镁铝铁氧化物的固熔体形式存在。
The X-diffraction analysis of fly ash showed that iron minerals were mainly hematite and magnetite, small amount of magnetic hematite, Mg-Fe spinel and Mg-Fe-Al oxide solid solution.
磁铁矿和赤铁矿之间的相互转变一直被认为是一个氧化还原反应的结果，反应的发生与一定的氧化剂或还原剂密切相关。
The transformation of magnetite and hematite in nature has generally been considered as a result of a REDOX reaction and linked to a specific oxidant or reductant.
如果大气中存在的二氧化碳太多，磁铁矿则无法形成；
Too much CO2, and magnetite can't form, whereas the opposite is true for siderite.
如果大气中存在的二氧化碳太多，磁铁矿则无法形成；
Too much CO2, and magnetite can't form, whereas the opposite is true for siderite.
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