The mechanism of hydrogenation of nitrogen into ammonia was discussed on the pure iron surface.
讨论了在纯铁催化剂上，氮分子和氢分子逐步合成氨的反应机理。
A kind of composite additive used for copper plating of chemical replacement on iron surface was investigated.
研究了一种用于钢铁基体化学置换镀铜的专用复合添加剂。
So it is important to discover the original shape of excavated iron antiquities and stabilize the rust of iron surface.
这对恢复出土铁器的面貌及进一步化学稳定转化铁器表面的锈层都具有重要的作用。
Besides its ability to produce a free iron surface, the acid supplies the oxidizing atmosphere needed for passivation to occur.
它除了能产生游离铁表面，还能提供钝化作用所需的氧化环境。
The Cast Iron Surface Plate can be classified as Grade 0, 1, 2, 3, 4 according to the national standard metrological verification procedures.
铸铁平台精度：按国家标准计量检定规程执行，分别为0,1,2,3级四个级别。
The shot blasting and paint coating make the iron surface elegant and anticorrosive. Low height design makes load and unload by forklift convenient.
表面经抛丸、喷塑处理，美观耐用，整体高度低，便于铲车加载、卸载货物。
The principal mechanism of formation of silicon nitride layer on iron surface is described, and variety of production processes and influence factors are reviewed.
综述了钢铁表面形成氮化硅薄膜的基本过程，各种制备方法、特点及影响因素。
The reaction of chemical replacement copper plating on iron surface and profile of the coating have been investigated by electrochemical methods and scan electron microscopy.
用电化学方法和扫描电子显微镜研究了钢铁置换镀铜反应及镀层形貌，结果表明：钢铁表面的置换铜镀层总是多孔的。
Pit-less type platform scale, checked iron surface plate (surface plate of SST models is smooth plate) combined with welding U-shaped steel girder formed a higher strength and reliable platform scale.
台面采用花纹面板（不锈钢系列为光板面板），U型钢梁焊接，强度高。
Something in addition to the iron on Earth's surface must have absorbed much of the oxygen produced by plant life.
除了地球表面的铁以外，一定有什么东西吸收了植物产生的大量氧气。
As a way of reconciling these two facts, scientists have hypothesized that nearly all of the oxygen being produced was taken up by iron on Earth's surface.
为了调和这两个事实，科学家们假设，几乎所有产生的氧气都被地球表面的铁吸收了。
However, phytoplankton flourish only in surface waters where iron levels are sufficiently high.
然而，浮游植物只在铁含量足够高的地表水中繁殖。
Earlier research indicates the color of Blood Falls is due to oxidized iron, but how the iron got to the surface of the glacier remained a mystery.
早期研究证明"红色河流“的颜色是由于氧化铁导致，但是铁如何到了冰川表面这仍然是个迷。
This is because the atmosphere does not have an iron grip on the carbon-dioxide level in surface waters.
这是由于大气不能完全支配在水平面上的二氧化碳浓度。
Place the left denim upper piece on to a flat surface, right side down.Following instructions on the fusing packet, iron it to the wrong side of this denim piece.
把左脚的鞋面放平，正面朝上，按熨溶胶包装上的说明将它熨在牛仔布的反面。
Restaurant versions usually come in a clay or iron pot, with about 100 chilis floating on the surface of the bright red broth, and a few pieces of beef poking through.
饭店的形式通常是在一个土锅或者铁锅里，其中约100个红辣椒浮在鲜红的肉汤表面，还有少许的片片牛肉戏弄其中。
The non-biodegradable industrial chemicals are attracted to the surface of the iron shavings, where they react by sharing electrons with the iron and become degraded.
非生物可降解的工业化学物质被吸附到铁粉的薄层上面来，与铁膜上的电子反应而降解。
Place the left denim upper piece on to a flat surface, right side down. Following instructions on the fusing packet, iron it to the wrong side of this denim piece.
把左脚的鞋面放平，正面朝上，按熨溶胶包装上的说明将它熨在牛仔布的反面。
SCALE : Oxidization of iron that forms on the surface of hot steel exposed to air or oxygen.
氧化皮：暴露在空气或氧气中的高温钢铁，在其表面所形成的氧化铁。
The reddish colour is due to iron (III) oxide in the surface minerals.
在红颜色是由于铁（三）在矿物表面的氧化物。
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 standard states that the citric acid-sodium nitrate treatment is the least hazardous for removal of free iron and other metallic contamination and light surface contamination.
该标准声明：柠檬酸-硝酸钠处理在去除游离铁合其他金属污染和轻的表面污染物时，危险性最低。
The Health Center is a valuable development tool that helps you iron out performance issues, memory leaks, and inefficient code before problems surface in production.
HealthCenter是一个宝贵的开发工具，它能帮助您消除性能问题、内存泄漏和低效代码，避免问题出现在生产阶段。
Testing for a passive surface is usually accomplished by looking for traces of free iron on the metal surface.
钝化表面的检测通常是通过查看金属表面的游离铁的踪迹来完成的。
Coating surface should be no leakage, dew iron and other defects.
镀件表面应无漏镀、露铁等缺陷。
The Third Step (Acid Wash) is to remove free iron, metallic residues, oxides, and other corrosion products from the surface of the metal.
第三步(酸洗)：去除金属表面的自由离子、金属残渣、氧化物和其他腐蚀产物。
The presence of exogenous surface contamination, including dirt, grease, free iron from contact with steel tooling, and so forth, may interfere with the formation of the passive film.
外生的表面污染，包括：尘土、油脂、来自钢铁加工的游离铁等等，可以影响到钝化膜的生成。
Material used: Zincified sheet iron worn stand well to stain as it worn with the transparent stain-proof oil on its surface.
使用材料：镀锌铁皮又称白铁皮，它不易生锈因为它的表面涂了一种防锈的透明的油。
Material used: Zincified sheet iron worn stand well to stain as it worn with the transparent stain-proof oil on its surface.
使用材料：镀锌铁皮又称白铁皮，它不易生锈因为它的表面涂了一种防锈的透明的油。
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