查询词典 hypophosphite

Today, two systems are used commercially: one is for the deposition of copper by means of formaldehyde as the reducer and another of nickel using either boranates or hypophosphite as reducer .

目前，在塑料上化学沉积金属已经取得工业应用的体系有2种，一种是以甲醛为还原剂的化学镀铜，另一种是硼氰化钾或次磷酸盐为还原剂的化学镀镍。

The resistance, tensile strength and ductibility of formaldehyde's deposit were better than that from sodium hypophosphite solution.

以甲醛为还原剂的化学镀铜层的电导率、抗拉强度、延伸率等物理性能均优于次磷酸钠化学镀铜层。

The results of the electrolysis showed that phosphite was transferred,to a certain degree,to hypophosphite with lower transferring rate and couldn't reach the requirements of industrial production,thus the cause of l.

本文通过电化学合成方法将化学镀镍过程中产生的亚磷酸盐转化为次磷酸盐的研究，首先根据理论分析和循环伏安曲线扫描分析，预测上述转化的可能性。

An electroless nickel process with sodium hypophosphite as reducing agents in alkaline bath, which is applied on polyurethane foam substrate, was studied in detail in this paper.

本文采用聚氨酯海绵为基体材料，以次磷酸钠为还原剂，在碱性化学镀镍溶液中对低磷化学镀镍磷合金工艺进行了详细的研究。

XRD analysis results indicate that temperature and time on the tin layer of preferred orientation did not affect the crystal surface structures are based on Sn (220) and Sn (211) the growth of the dominant, while the sodium hypophosphite is conducive to crystal faces of Sn (101) of the formation

XRD分析结果说明温度和时间对镀锡层的择优取向没有影响，晶面结构都是以Sn(220)和Sn(211)生长占优势，而次亚磷酸钠有利于晶面Sn(101)的形成。

The result of experiment shows that the hardness will increase and the plating rate will decrease with the rising of concentration ratio of nickel sulfate and hypophosphite.

最后的试验结果表明，在其它条件不变的情况下，随着镍磷摩尔浓度比的增大，镀层硬度逐渐上升，而镀速逐渐下降；在其它条件不变的情况下，随着丙酸浓度的增加，平均镀速有所上升，而硬度先上升，达到一个最大值后开始下降。

On the basis of Ni-S alloy electrode made by electrodeposition method, Ni-P-S alloy electrode was obtained by adding sodium hypophosphite monohydrate into the bath.

在电沉积法制备Ni-S合金电极的基础上，向镀液中添加次亚磷酸钠制备了Ni-P-S合金电极。

Acid electroless nickel phosphorus plating on PZT ceramic was studied with hypophosphite as a reducing agent.

以次亚磷酸钠为还原剂，在压电陶瓷表面进行酸性化学镀镍磷。

The existing bath analyzing methods are compared,as a result a quick and continous method for determining sodium hypophosphite and stannum ion in electroless tin bath is determined.

并对现有的镀液分析方法进行了比较，确定了快速连续测定化学镀锡液中亚锡离子和次磷酸钠的方法。

Considering the two factors of filtration time and water containing of the sediment, calcium hypophosphite and salvolatile are chosen as the raw materials. The best technics conditions have probed and the craft parameters are provided.

考虑生成的沉淀的过滤时间和夹水量两个因素，选择以次磷酸钙和碳酸铵为原料进行制备，探索了制备过程中的最佳工艺条件，给出了工艺参数。

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。