查询词典 ni

In this dissertation, Hydrogen production by steam reforming of ethanol has been investigated over ceria supported Ir and Ni catalysts. The catalytic performance of Ir and Ni catalysts supported on different metal oxides were also studied.

本论文重点研究了氧化铈担载的Ir和Ni催化剂上的乙醇水汽重整制氢反应，同时也考察了不同载体担载的Ir，Ni催化剂。

The results show that contents of Zn in bat guano（670.5 mg/kg） is the highest, inferring indirectly the pollution of Zn in the environment around the cave is more serious. Diplopod has not accumulation ability to Ni and Diestrammena marmorata has not accumulation ability to Cr and Ni too.

结果显示蝙蝠粪便中Zn的含量最高（670.5 mg/kg），间接说明了洞穴外围环境中的Zn污染较为严重，马陆对Ni与斑灶马对Cr和Ni无富集能力。

The simulation test of determining the viscous resistance of the sucker rod with Ni-P-PTFE plating is conducted. The test result shows that the viscous resistance of Ni-P-PTFE plated rod in polymer solution is 20% less than that of the Ni-P plated rod, and the compound layer has better wear- and corrosion-resistance. There...

测定粘滞阻力的现场模拟实验表明，镀覆Ni P PTFE的仿抽油杆比常规镀Ni P的仿抽油杆在聚合物溶液中所受的粘滞阻力约小 2 0 %，且复合镀层具有优良的耐磨和耐蚀性，因此这种工艺对减少抽油杆磨损断裂事故，延长使用寿命具有重大意义

In addition to Fe+(54Fe+, 56Fe+, 57Fe+), other fragment ions were detected in bacteriogenic pyrites, such as 27 Al+, Si+(28Si+, 29Si+, 30Si+), 40Ca+, Cu+(63Cu+, 65Cu+), Zn+(64Zn+, 66Zn+, 67Zn+, 68Zn+), Ni+(58Ni+, 60Ni+, 62Ni+), and C3H7+.

在杆状菌落成因的黄铁矿中，检测到的组成有 Fe+（54 Fe+、56 Fe+、57 Fe+）、 27 Al+、 Si+（28 Si+、29 Si+、30 Si+）、40 Ca+、 Cu+（63 Cu+、65 Cu+）、 Zn+（64 Zn+、66 Zn+、67 Zn+、68 Zn+）、 Ni+（58 Ni+、60 Ni+、62 Ni+）、 C3H7+。

Fine carbides precipitated from ferrite in 16-6 Cr-Mo, 16-2.5-6 Cr-Ni-Mo, and 16-5-6 Cr-Ni-Mo steels in the early stages of ageing are metastable, during prolonged heating they redissolve and are gradually replaced by χ-phase. Some residual carbides serve as the nuclei of the growing χ-phase. The structure of quenched 16-15-6 Cr-Ni-Mo steel is austenitic, during subsequent heating only M_6C and M_(23)C_6 mixed carbides are precipitated.

在16-6Cr-Mo、16-2.5-6及16-5-6Cr-Ni-Mo不锈钢中，从铁素体内沉淀出来的细小碳化物是一种过渡组织，在x相的成核与长大过程中，它们将不断地进行溶解。16-15-6 Cr-Ni-Mo不锈钢属奥氏体型，在不同温度进行固溶处理，奥氏体都很稳定，在随后的恒温处理过程中，只有碳化物从奥氏体内析出。

The Ni and Zn-doped spiculate α-FeOOH were prepared by the coprecipitation method and citric acid method using FeCl2、Zn(NO3)2、Ni(NO3)2 and NaOH as raw material and spiculate α-FeOOH as intermediate. Then they successively were enwraped by citric acid complex of the Ni and Zn and heat treated to get spiculate nano-Ni0.5Zn0.5Fe2O4. The particles size and slenderness ratio of spiculate nano-Ni0.5Zn0.5Fe2O4 were successfully controlled by the doped mass of Ni and Zn in the coprecipitation process.

以FeCl2、Zn(NO3)2、Ni(NO3)2和NaOH为原料，借助针状α-FeOOH做为中间体，有效的把共沉淀法和柠檬酸法相结合，制得掺有镍和锌的针状纳米α-FeOOH，在其表面包裹镍和锌的柠檬酸络合物后，经热处理制得了针状的纳米Ni0.5Zn0.5Fe2O4 ，并通过控制共沉淀法过程中镍和锌的掺入量，有效的控制了针状纳米Ni0.5Zn0.5Fe2O4 的粒径和长径比。

It was revealed that both Ni Cr P and Ni W P coatings are effective in improving the bending strength of cobalt based and nickel bronze based composites.

结果发现，在Co基和Ni 青铜基复合材料中，Ni Cr P和Ni W P镀层均可以起到提高复合材料抗弯强度的作用。

Furthermore, transfer coefficient between total content and variable speciation including acid-soluble/exchangeable, reducible, oxidisable fraction of heavy metals are different. Transfer coefficient of total Cr is 0.65 in tailings area, but that of variable speciation is 0.26. In contrast with Cr,transfer coefficient of total Ni is 0.26, but that of variable speciation is 0.67. The similar characteristics on Pb and Zn in cultivated soil, namely, transfer coefficient of total Zn is high, but low for variable speciation, which is reversed for Pb. Transfer coefficient of total content and variable speciation in abandoned soil are low compared with above two fields soil, especially, variable speciation of Cu and Ni are not transported almost down soil profile.

重金属总量和活性态（包括弱酸提取态、可还原态、可氧化态）迁移率也表现出很大差异，尾矿区土壤Cr总量迁移率较高为0.65，而其活性态迁移率较低为0.26，Ni与Cr迁移特征完全相反，总量迁移率为0.26，而活性态迁移率为0.67；农田土壤中Pb总量迁移率低而活性态迁移率高，Ni与Zn特征相似，总量迁移率高而活性态迁移率相对较低；大棚地土壤中重金属迁移率均较低，Cu和Ni活性态几乎未发生向下迁移。

The effects of initial electron density Ni and laser pulse width τ on damage threshold fluence Fth were analyzed respectively.

研究结果表明，对应于一定的脉宽，存在一个临界初始电子密度，当Ni低于这一临界密度时，Fth不受Ni影响；当Ni高于临界密度时，Fth随Ni增加而降低。

The effects of initial electron density Ni and laser pulse width τ on damage threshold fluence Fth were analyzed respectively. Both the nature of multi-photon ionization and the role of avalanche ionization were also discussed.

研究结果表明，对应于一定的脉宽，存在一个临界初始电子密度，当Ni低于这一临界密度时，Fth不受Ni影响；当Ni高于临界密度时，Fth随Ni增加而降低。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。