The discovery of Cr_2S_3 phase during the treatment of Cr(Ⅵ) by natural pyrite;
天然黄铁矿除Cr(Ⅵ)中Cr_2S_3物相的发现
The main influencing factors and isotherm adsorption in the treatment of Hg(Ⅱ)-bearing wastewater by using natural magnetite were studied on the basis of the theory of adsorbing heavy metal ions on the surface of water-metal oxides and hydroxides.
利用重金属离子可在水合金属氧化物和氢氧化物矿物表面产生吸附作用的原理 ,进行了天然磁铁矿处理含Hg(Ⅱ )废水的实验研究 ,结果表明 :当温度为 2 5℃、吸附平衡时间为 6 0分钟、试样用量为 2 0g/L、试样粒径为 2 0 0目以下、pH值为 6 。
The permanent magnetic ferrite was prepared by the method of solid-phase reaction with the natural magnetite without magnetic separation.
用天然磁铁矿作原料 ,不进行磁选 ,直接用固相反应法生产永磁铁氧体 。
The permanent magnetic ferrite was prepared by the method of solid phase reaction with the natural magnetite without magnetic separation.
通过对基本配比、预烧温度、烧结温度等条件的探索 ,说明在合适添加剂的条件下 ,天然磁铁矿石不经过任何的磁选过程完全能够生产性能优良的永磁铁氧体产
Photoelectrochemical response of natural limonite and its effect on the growth of Acidithiobacillus ferrooxidans
天然褐铁矿的光电化学响应及对嗜酸性氧化亚铁硫杆菌生长的影响
Measurement of Secondary Neutron Emission Double-Differential Cross Section for Natural Iron Induced by 8.17 MeV Neutron
8.17MeV中子与天然铁作用的次级中子双微分截面测量
A piece of magnetite that has magnetic properties and attracts iron or steel.
天然磁石有磁性的磁铁矿，能吸引铁或钢
Natural goethite has the ability to degrade phenolic compounds better than synthetic goethite.
(3)天然针铁矿降解酚类化合物的能力高于合成针铁矿。
Experimental Treatment of Hg(Ⅱ) and Cd(Ⅱ) and Cr(Ⅵ) Bearing in Waste Water by Natural Magnetite and Limonite;
天然磁铁矿与褐铁矿处理含Hg（Ⅱ）、Cd（Ⅱ）、Cr（Ⅵ）废水实验研究
Antimicrobial Activities and Mechanisms of Native Lactofarrin and Recombinant Lactoferrin in Vivo and in Vitro;
天然乳铁蛋白和重组乳铁蛋白的体内、体外抗菌效果及机理研究
The sand is dyed with natural iron oxide and used to track river currents.
沙子用天然的氧化铁着色 用于追踪河流
The United States of today were made first by the river 'steamboat, and then by the railway.
今天的美国首先是内河汽船促成的，然后是铁路。
The natural form of carbon in cast iron is the free graphite flake form.
铸铁内的碳天然形式是游离石墨薄片形式。
Applied Foundation Research on Removal of Fluoride by Fe-Activated Clinoptilolite;
铁活化天然斜发沸石除氟应用基础研究
Study of Oxygen-Deficient Magnetite Fe_3O_(4-δ) Reducing SO_2
天然磁铁矿直接分解二氧化硫的应用研究
Influence of natural organic matter on the removal of arsenic by zero-valent iron from water
天然有机物对零价铁去除水体中砷的影响研究
The application of the pipe jacking construction in natural gas crossing railway
顶管施工在天然气管道穿越铁路中的应用
Natural Resources: bauxite, coal, crude oil, iron ore, natural asphalt, calcium, silica, mica, salt, clays.
自然资源：铝矾土、煤、原油、铁砂、天然沥青、石灰、硅石、云母、盐、粘土。
It was still dark enough but a rim of lightness lay on the edge of the sea and made the waves gray iron.
天仍然很黑，但大海接天处现出一抹光亮，把浪花映成了铁灰色。
cerium compound, inorganic or organic (excl. ferrocerium and natural cerium compounds)
铈化合物,无机或有机的（不包括铁铈和天然铈化合物）
A natural brown earth containing ferric oxide and manganese oxides, used as pigment.
棕土含有红色氧化铁和氧化锰的天然棕色泥土，用作颜料
It is rarely found in nature except as a visitor from other worlds in the form of meteorites;
在自然界中很少能找到纯铁，除非是把陨星这个天外来客也算上。
"Most natural electrum also contains copper, iron, palladium, Bismuth, and perhaps other metals."
大部分天然银金矿含有铜、铁、钯、铋,可能还有其它金属。