查询词典 cyanide

Development process and status guo of cyanide-free silver plating technology were introduced.

介绍了无氰镀银的发展过程和技术现状。

Ten typical formulas and some kinds of additives used for cyanide-free silver plating were introduced.

综述了十种典型的无氰镀银工艺配方和无氰镀银所采用的添加剂类型。

The efficiency of silver recovery and cyanide removal, as well as power consumption was discussed in terms of pulse voltage, pulse duty factor, and pulse frequency.

结果表明，脉冲电源较直流电源能更加有效降低阳极的超电位，减少电极的极化，从而降低槽电压，进而有效地降低电能消耗。

The objective of the present study was to recover silver and remove cyanide from silver-plating wastewater using the novel pulse-electrolysis technique.

利用脉冲电源从含氰含银电镀废水中回收银和去除氰，对比了脉冲电源与直流电源对含氰镀银废水的处理效果，系统研究了脉冲电源的电解电压、占空比和脉冲频率等参数对电能消耗、银回收率和除氰率的影响。

Silver electroplating of beryllium bronze with thiosulfate was used to replace conventional toxic silver plating with cyanide in accordance of the characteristics of the beryllium bronze .

从分析铍青铜材料的特殊性入手，针对性地采取有效的前处理工艺措施，以硫代硫酸盐镀银取代传统的有毒的氰化镀银，分析了银镀层变色的原因并提出了相应的抗变色处理措施。

The formulation and operation conditions of cyanide silver plating were introduced, and a blackening agent formulation with jet black finish on silver surface and its post-treatment process were presented.

介绍了氰化镀银配方及操作条件，给出了一种银上着色深的黑化剂配方及其后处理工艺。

The parameters of square-wave plating from cyanide silver bath are selected by Hull cell test, and the optimum pulse duration, duty ratio and average corrent are estimated through combined experiments.

于最佳控制条件下，从氰化镀银溶液中电沉积的镀层，就外观、微观形貌和抗硫能力而言，都优于从同一镀液中用直流电沉积的银层。

Comprehensive recovery of gold ; silver ; copper and lead ; oxidation leaching copper in ammonia solution ; leaching lead with nitric acid ; leaching gold and silver with cyanide

中国科学院化工冶金研究所；黄金， GOLD ，编辑部邮箱 1997年 05期综合回收金、银、铜、铅；氧化氨浸脱铜；硝酸脱铅；氰化提取金银

Using density functional theory, the adsorption of cyanide on the different sites of Cu(100) surface was studied with end-on and side-on geometries.

采用密度泛函方法，以原子簇Cu14 为模拟表面，对CN自由基分子在垂直和平行Cu( 10 0 )表面不同位置的吸附情况进行了研究，结果表明：通过原子C垂直吸附在表面的顶位是其最佳吸附方式，吸附后CN键振动频率发生蓝移；而其它吸附方式中CN键振动频率均发生红移。

The researchers detected hydrogen cyanide molecules in disks circling yellow stars like our sun -- but found none around cooler and smaller stars, such as the reddish-colored "M-dwarfs" and "brown dwarfs" common throughout the universe.

研究人员在类似太阳的黄色恒星周围的星云盘中检测到了HCN，但在更冷更小的恒星——比如遍布宇宙的M型红矮星和棕矮星——周围却没有找到HCN踪迹。

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。