查询词典 nickel

The results showed that the nanocrystalline bcc FeNi particles were available using carbonyl iron and nickel powders as the raw materials during the high-energy ball milling.

结果表明：以羰基铁和羰基镍为原料，通过高能球磨得到了bcc结构FeNi纳米晶合金。

After 10h ball milling, the alloy of carbonyl iron and carbonyl nickel began to form, and the sample kept its original bcc and fcc structure; after 100h ball milling, the sample became a solid solution with bcc structure; after 200h ball milling, the diffraction peak of Ni almost disappeared and the isotropic grains with D achieved, which was mainly attributed to the dislocations and disclinations of the nanocrystalline bcc FeNi suffering from severe plastic deformation by ball milling.

球磨10h时，羰基铁和羰基镍开始形成合金，但大部分Fe、Ni原子仍分别以bcc结构和fcc结构存在。球磨100h时，样品以bcc结构的FeNi合金为主，球磨200h后，样品中fcc结构Ni特征峰几乎消失，FeNi纳米晶达到最小粒径的平衡值，~8nm。高能球磨过程中，晶界区域的层错缺陷是合金化和纳米晶形成的重要因素。

They feature wood handles and nickel-plated brass ferrules.

它们以木制手柄跟镍制金属箍为特色。

The recoveries of rhodium by lead and nickel sulfide fire assay were 81.5%±1.2% and 75.1%±3.9%, respectively, and the latter was proved to be independent on matrices of chemical standards and geological standard materials.

铅试金法的流程回收率（ n =4）为81.5%±1.2%；镍锍试金法的流程回收率（ n =6）为75.1%±3.9%，对简单化学标准和地质标准物质基体，铑的回收率相近。

Calculations of the detection limits show that a higher sensitivity is available with a planar germanium detector and a nickel sulfide fire assay.

探测极限的计算结果表明：镍锍试金预富集并用平面锗探测器测量，可获得更好的分析灵敏度。

A nickel sulphide fire assay was applied to the pre-separation of the PGEs. The conditions of the NiS-FA procedure were carefully established.

详细研究了镍锍试金预富集流程的配方、熔炼、酸溶等条件，使得流程具有大于95％的化学回收率和10〓水平的空白值。

High sensitive instrument neutron activation analysis is connected with highefficient nickel sulphide fire assay technique to establish the method for determing platinum group element s in geological materials.

将镍锍试金法同高灵敏度的仪器中子活化分析相连接，建立了铂族元素的镍锍试金中子活化方法。

JP2Rhodium of 10-9 level was accurately measured by NAA combined with lead fire assay, and 10－10 level was accurately measured by NAA combined with nickel sulfide fire assay.

铅试金中子活化法可实现10－9铑含量的准确测量，镍锍试金中子活化法可实现10－10铑含量的准确测量。

According to mineralogical and chemical characteristics of cobalt-rich crust samples from the west Pacific ocean, the reagent formula used in common nickel sulfide fire assay preconcentration for PGE analysis were modified.

根据西太平洋麦哲伦海山富钴板状结壳样品的成分特征，对常规的锍镍试金配方作了改进；酌情减少捕集剂羰基镍的加入量，可显著降低铂族元素的空白值。

The content of platinum-group elements in samples of sulfides and gold-bearing breccia from the Taibai gold deposit was determined by the nickel sulfide fire assay and inductively coupled plasma-mass spectrometry.The results show that the PGE content in these samples is higher than that in the Baguamiao gold deposit,Qinling,but lower than that in the primitive mantle.

采用硫镍火法试金结合电感耦合等离子质谱分析了太白金矿硫化物和含金角砾岩中铂族元素的含量，结果显示，与秦岭地区八卦庙相比铂族元素含量较高，而低于原始地幔，其中铂、钯、钌富集，并结合前人研究资料对铂族元素的来源和迁移机制进行探讨。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。