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The anodic oxidation reactions of butynediol and propiolic alcohol in the bright nickel electroplating were studied using ultraviolet spectrophotometry. The mechanism of the additives in the electroplating process was discussed.

采用紫外分光光度法研究了丁炔二醇和丙炔醇在光亮镀镍过程中的阳极氧化反应，以期进一步认识添加剂在电镀过程中的作用机理。

A new thermographic material was studied,in which hydrophilic polyvinyl alcohol was used as a binder, nickel stearate was used as a main material and pyrogallic acid was used as a developer.

本文对以水溶性聚乙烯醇为粘合剂，硬脂酸镍(NiSt2)为主要原料，焦性没食子酸为显影剂的一种新型热成像材料的研究。

OBJECTIVE: To investigate the effect of recasting on bonding strength of porcelain fused to a Ni-Cr ceramic alloy.

其中镍铬烤瓷合金在真空加氩气保护的环境下反复铸造后金瓷结合力的变化报道较少。

Diamond single crystals were synthesized at a cubic press under high-temperature and high-pressure with the sheeted powder metallurgical iron-based catalysts, which were added by moderate copper powder.

以铁、镍单质金属粉和适量的电解铜粉为原料，采用粉末冶金方法制备规格为Φ15×0.5mm的片状铁基触媒，在六面顶压机上高温高压合成金刚石单晶。

Common Pitfalls Common Pitfalls Common Pitfalls Common Pitfalls Common Pitfalls The first issue is that many laboratories throughout the world rou- tinely offer an incomplete assessment of soil fertility, providing only an analysis of pH, organic matter, some form of ni- trogen, available phosphorus, and potas- sium.

常见缺陷常见缺陷常见缺陷常见缺陷常见缺陷第一个问题是，世界各地的许多实验室柔， tinely提供了一个完整的土壤肥力评价，只提供一分析pH值，有机质，一些镍形式特罗根，有效磷和potas，泽。

Here, by introducing C-terminally 6xHis-tagged human Nap1 gene into Escherichia coli and exploiting the nickel-charged sepharose gel system to purify the human Nap1 protein, we show that the Nap1 enzyme function is preserved in human as in lower organisms such as bacteria and plants using succinamic acid as the substrate.

此研究中，我们将已在胺基末端接上6个组胺酸标记的Nap1基因表现在大肠杆菌中，并使用接合上镍原子的琼脂糖凝胶纯化出人类Nap1蛋白，再以丁醯胺酸作为受质，证明人类Nap1蛋白具有酵素活性。

Methane sulphonic acid has the right combination of properties for electroplating bath s containing lead, tin, copper, nickel and some precious metals.

在含有铅、锡、铜、镍和一些贵金属的电镀池中，甲磺酸是一种很好的电解质。

Methane sulphonic acid has the right combination of properties for electroplating baths containing lead, tin, copper, nickel and some precious metals.

在含有铅、锡、铜、镍和一些贵金属的电镀池中，甲磺酸是一种很好的电解质。

Studies on high performance electrode material of supe...

因此，本论文选定二氧化锰、碳纳米管、氧化镍作为超级电容器的电极材料，旨在制备和研究具有良好电容特性的超级电容器电极材料。

The PIII technique did not alter the superelastic character of the Ni-Ti instruments by way of DSC analysis.

并且通过DSC的分析，PIII并不会改变根管镍钛旋转器械的超弹性特质。

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。