镍的

A gray mineral consisting of cobalt arsenide and nickel; an important source of cobalt and nickel.

一种灰色矿物，由砷化钴和镍组成，是钴和镍的重要来源。

Armed with this information and further analyses, Rumble, lead author Bekker, and colleagues propose the following scenario today in Science . Early in Earth's history, volcanic eruptions spewed massive amounts of sulfur dioxide into the atmosphere, where UV sunlight broke down the gas and created the odd sulfur isotope ratios. The sulfur descended with the rain and accumulated into sedimentary beds on the sea floor. Once there, superheated water from geothermal vents at various locations on the sea floor cooked the sulfur into sulfide. Finally, nickel-bearing magma welled up from Earth's mantle, combining with the sulfide to form nickel sulfide and encasing the compound inside volcanic rock called komatiite.

凭借这份资料和进一步的分析，朗布尔、研究论文的第一作者贝克及同事们今天在《科学》杂志上提出了如下的推测：在地球早期的历史上，火山爆发将大量的二氧化硫气体喷射到空中，太阳的紫外线将其分解，产生了奇特的硫同位素比值，这种硫随雨降下，积存于海底沉积层中；一旦到达海底，海底各处的地热出口所产生的温度过高的水把硫加热成硫化物；最终含有镍的岩浆从地幔中涌出，跟硫化物结合形成硫化镍，并将硫化镍包裹在一种叫做"科马提岩"的火山岩中。

The results of X-ray diffraction showed that the nickel nanoparticles had face centered cubic structures and the structures of polyandinc have not been affected under high temperatures.

采用先合成导电聚苯胺，然后用多元醇原位液相还原的方法，合成了聚苯胺／镍纳米复合材料，纳米镍的含量约为19.22%。

This paper reviews geochemical characters, distribution, modes of occurrence and migration of Ni in coal.

本文综述了镍的地球化学特征，以及煤中镍的分布、赋存状态与迁移规律。

Based on the catalytic oxidation of isatin with potassium iodate catalyzed by nickel in ammonia me dium, a kinetic spectrophotometric method for determining trace nickel in oil was developed and the kinetic condition was studied.

基于氨性介质中镍催化高碘酸钾氧化靛红褪色反应，建立了测定油品中痕量镍的新方法，探讨了其动力学条件。

Nickel silver is a metal alloy of copper with nickel and often but not always zinc, but contains no elemental silver.

镍银是铜和镍的合金，有时还会加入锌，但不含银元素。

The process is composed of three steps: the formation of Ni_2 gel; the nucleation of nickel oxalate; the transition from Ni_2 gel into nickel oxalate sol.The nickel oxalate synthesized is identified by XRD to beα-NiC_2O_4·2H_2O with rhombohedron morphology, while two angles of the rhombus at underside are 106 and 74 degrees separately.

研究中，采用SEM、XRD、FTIR、TGA—DTA、GCMS等方法，对粉末样品进行表征。1凝胶—溶胶法制备单分散草酸镍粉末提出了一种凝胶—溶胶法制备单分散草酸镍的方法，由Ni_2凝胶生成—NiC_2O_4·2H_2O颗粒形核—凝胶Ni(OH_2向溶胶(NiC_2O_4·2H_2O)转化3个步骤组成。

The nickel contained in the spherical nickel oxyhydroxide has a mean valence of 2.95 or more.

球状羟基氧化镍中含有的镍的平均价数为2.95或以上。

The GIBS scheme can raises the phase transformation temperature to 850℃ and the agglomeration temperature to 800℃.

而GIBS制程达到晶相转换温度850℃与结块温度800℃的效果，其热稳定性比未做Ge布植的矽化镍与高了100℃，猜测其原因为高浓度的Ge在矽化镍/矽的界面聚集，平衡了在界面上的应力，使得热稳定性提升，除此之外，从TEM图中还可发现Ge离子布植提升了矽化镍的界面平坦度。

In order to obtain reasonable processing parameter of electroless nickel plating, the influences of the concentration of reductants NaH_2PO_2 and complex agents DL-lactic acid, stabilizers ,pH value and temperature on the deposition rate , the content of P and stability of the plating solution were studied.

在化学镀镍的工艺中，研究了次亚磷酸钠和络合剂乳酸的浓度、pH值、稳定剂和温度等工艺参数等对沉积速度和镀镍层含磷量的影响，找出了合理的化学镀镍工艺：还原剂的浓度为25 g/l~ 30g/l，络合剂乳酸的浓度为8ml/l ~ 12 ml/l，pH值的范围为4.6 ~ 4.9，选择作稳定剂，温度为85℃左右。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。