镍的

Therefore,the objective of this dissertation is to explore magnetic field effects on chemical reduction of Ni~(2+), magnetic domain structures and magnetic properties of nickel.

因此本论文致力于探讨磁场下镍离子化学还原反应的特征，并研究磁场对产物磁畴结构及磁性能的影响。

Then the chemical reduction of[Ni(N_2H_4)_x]~(2+) may occur along the magnetic line of force due to the enhanced electrode potential,leading to the formation of uniform 1 D wires.While with the increase of the concentration of Ni~(2+), the reaction rate increases too,so it can be deduced that the chemical reduction of [Ni(N_2H_4)_x]~(2+) may be taken place quickly in the whole system,leading to the formation of isolated particles coexisted with the wires composed of microspheres which formed along the magnetic line of force.

而当Ni~(2+)浓度较高时，反应速率相对较快，[Ni(N_2H_4)_x]~(2+)可能在还没来得及迁移到磁力线之前，还原反应就已经很快的在整个体系中发生了，导致出现了产物中纳米球和一维镍线共存的现象。

The formation of our 1D nickel wires can be ascribed to the cooperative effect of the reaction rate and magnetic field.The reaction rate in the system is controlled mainly by adjusting the reactant concentration when other reaction conditions are fixed.When the concentration of Ni~(2+) is low,the reaction rate is correspondingly slow,so the complex[Ni(N_2H_4)_x]~(2+) preferentially migrates to the magnetic line of force since paramagnetic metal ions are attracted toward the maximum field.

当反应物Ni~(2+)浓度较低时，反应速率相对较慢，[Ni(N_2H_4)_x]~(2+)优先选择迁移到磁力线附近并且沿着磁力线方向排列，导致电极电势增大，于是[Ni(N_2H_4)_x]~(2+)的化学还原反应也是沿着磁力线发生，结果导致了镍纳米线的形成。

Magnetic abrasives are composite abrasives which must be magnetizable and abrasive.

磁性研磨材料必须具备有被磁化性质及有研磨能力的复合磨料，磁化性良好的物质如铁、钴、镍。。

Eventually, the metal will crumple and uncrumple, totally unaided, in response to changes in temperature and without any sign of metal fatigue.

但人们可以通过改变合金中镍钛的比例来控制使它反应的最佳温度。

The relationship between microfauna community and heavy metal ions Ni2+, Cd2+, Cr2+, Cu2+ and Pb2+ concentrations in activated sludge of Baoding Lugang Sewage Treatment Plant and Baoding Yindingzhuang Sewage Treatment Plant was studied.

研究了保定鲁岗污水处理厂和保定银定庄污水处理厂活性污泥系统中镍、镉、铬、铜和铅离子的浓度与微型动物群落的关系。

The rat's testis damage is related to the enhancement of oxidative stress of mitochondria and microsome caused by nickel sulfate.

镍对大鼠睾丸细胞的损伤可能和其所致的睾丸细胞线粒体及微粒体氧化应激效应增强有关。

Quartz tube was placed between the GC column outlet and the detector and heated to 700℃ with a 22 gauge nichrome wire coil (8 cm L, 50 turns)(Variable Voltage Controller set at 50 V) to decompose the organic mercury species to HgO.

加热镍铬电热丝至350度9秒钟，使不同的有机汞从Carbotraps中释放出来。气相色谱分析，95℃下用充满60/80网孔15% OV-3红色硅藻土色谱载体WAW-DMCS约束于修改的GC炉。

China is already the world's biggest producer of aluminium, zinc and lead; the second largest of tin and among the top 10 in copper, nickel and silver.

中国目前已是全球最大的铝、锌、铅生产国，第二大锡生产国，同时在铜、镍和银的产量上也位居全球前十名。

Because of the rich mineral deposits of gold, silver, nickel, zinc

由于在加拿大地盾的远古石头上发现的金矿，银矿，镍矿，锌矿，铜矿

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。