查询词典 nickel brass

Two skeleton nickel catalysts A and B were prepared at 50 ℃ and 90 ℃ respectively and hydrogenation of furfuryl alcohol to tetrahydrofurfuryl alcohol was studied with the catalysts under different reaction conditions.

研究了以骨架镍为加氢催化剂，以糠醇为原料制备四氢糠醇。在中温和高温下制备了两种骨架镍催化剂A和B，研究了不同的反应条件对两种骨架镍催化剂的影响，确定了最佳反应条件。

The THFA yield and selectivity were 2.0%higher than those by using catalyst Ⅰ without promoter,3.0%higher than those by using Raney nickel catalyst under the same reaction conditions and furfuryl alcohol conversion.

在相同反应条件和糠醇转化率条件下，四氢糠醇收率和选择性均比没有助剂的镍催化剂Ⅰ高2.0%，比骨架镍催化剂高3.0%。

Furfuryl alcohol ; hydrogenation ; skeleton nickel catalyst ; tetrahydrofurfuryl alcohol

糠醇；加氢；骨架镍催化剂；四氢糠醇

" China is one element in the equation, but the fact that India is consuming a lot of oil and nickel is a factor too," Mr Galli said.

中国只是公式中的一个因素，印度正在消耗大量石油和镍，这也是因素之一。

The gluside additive in plating solution of bright nickel is determined guantitatively by UV spectrophotometry without any auxiliary reagent.

用紫外分光光度法，在无其它辅助试剂的情况下定量地测出了光亮镍镀液中的添加剂糖精的含量。

The electrochemical property of the polarographic adsorptive complex wave produced by selenium and glutathione, nickel and dimethyl glyoxime, cadmium and KI discussed in this paper.

本文探讨了硒与谷胱甘肽、镍与丁二酮肟、镉与碘化钾产生的络合吸附波的电化学性质，并应用到实际样品的测定中，取得了良好的效果。

Gravitative differentiation occurred to the magma in the magma chamber, resulting in the increasing of basicity in the upper intrusive lithofacies and the better ore potential, and subsequently copper and nickel sulphides were formed by the ore magma injection.

熔浆在岩浆房发生了重力分异作用，致使其上侵岩相基性程度逐渐增高，含矿性也越来越好，最后由矿浆贯入形成了铜镍硫化物矿体。

The procedures were effected by pH value,amount of humin and initial aqueous concentration of nickel.

通过液闪法分析得到胡敏素可富集镍，但是吸附受介质pH值、胡敏素用量和水相镍初始浓度等因素的影响。

There may be exist reversible transitions among humic acid, fulvic acid and humin for variation of ultra-violet of peat or humin into nickel solution.

泥煤或胡敏素镍溶液紫外光谱的变化说明胡敏酸、富里酸和胡敏素3者之间或许存在可逆转化。

Keywords Peat;Humin;Nickel;Adsorption;pH

泥煤； 胡敏素；镍；吸附； pH

Analog output can display output results.

可以模拟输出显示输出效果。

It implied that RAPD technique pro vided a new alternative for checking irradiation induced effects.

对扩增产物进行数据分析，结果表明RAPD技术能够检测出辐射后唐菖蒲基因组变异情况，可用于对唐菖蒲辐射后基因变异的分析。