查询词典 Zn

In order to study the mechanism of electrodepositing Zn-Ni alloy coatings,the curve of cathodic polarization of electrodepositing Zn-Ni alloy coatings was determined by changing potential in the system of three electrodes,and the influence of concentration of additive on the cathodic polarization was studied.

为了研究Zn-Ni合金镀层的电沉积机理，采用三电极体系下的动电位法测定了电沉积Zn-Ni合金镀层的阴极极化曲线，并研究了添加剂浓度对阴极极化的影响。

In order to study the mechanism of electrodepositing Zn-Ni alloy coatings, the curve of cathodic polarization of electrodepositing Zn-Ni alloy coatings was determined by changing potential in the system of three electrodes, and the influence of concentration of additive on the cathodic polarization was studied.

为了研究Zn-Ni合全镀层的电沉积机理，采用三电极体系下的动电位法测定了电沉积Zn-Ni合金镀层的阴极极化曲线，并研究了添加剂浓度对阴极极化的影响。

The results show that the dissolution process of prefabricating alloy can be divided into two periods when the temperature of zinc melt is below the melting point of aluminum.Firstly,zinc melts infiltrates into the prefabricating alloy and then Zn-Al-TiC alloy forms in the surface layer of the prefabricating alloy.Secondly,the Zn-Al-TiC alloy of this alloy surface layer begins to dissolve to the zinc melt.

结果表明：当锌熔体温度低于铝熔点时，预制合金的溶解可分为两个阶段：第一阶段为液态锌向预制合金中浸渗，并在预制合金表层内形成Zn-Al-TiC合金；第二阶段为预制合金表层内的Zn-Al-TiC合金开始溶解并进入锌熔体。

The experimental results show that the appropriate composition of phosphating solution is composed of Zn(H_2PO_4)_2·2H_2O 55-65g/L,Zn(NO_3)_2·6H_2O 70-85g/L,H_3PO_4 5mL/L,NaNO_2 0.2-0.4g/L. The crystal structure of the gray phosphate coating prepared at 40℃/10min i...

结果表明，低温快速磷化处理液的组成：Zn(H2PO4 )2· 2H2O为 55 ~65g/L、Zn(NO3 )2·6H2O为 70~85g/L、浓H3PO4 为 5mL/L、氧化剂NaNO2 加入量为 0 2~0 4g/L；经 40℃、10min的快速磷化处理后，获得的磷化膜膜重大于 10g/m2，结晶细小致密，与基体结合力强。

These results suggest that SH-containing ligands is not the main chelator of Zn/Cd in the hyperaccumulating ecotype of Sedum alfredii H.

以上结果提示：含硫有机物不是东南景天Zn/Cd超积累的主要配体，GSH主要是解除体内游离态Zn/Cd的毒性；增加硫元素的供应时提高Zn/Cd的积累有一定作用。

Contents of Cu, Zn, Ni, Cr and Pb increased steadily in tree-rings from the heart-wood to sap-wood at both sites, reflecting the increase in the bio-availability in the Delta area during the past decades. Peaks in Cu, Zn, Ni and most obviously Cr and Pb, were found in rings formed after 1990. It was suggested that the recent increase of the heavy metals in soil and atmosphere in the Delta was the main source contributed to the elevation of the heavy metals in the pine rings.

结果表明：西樵山马尾松林地表层土壤Cu、Zn、Cd和Pb含量均超过其在广东省表层土壤环境背景值，鼎湖山马尾松林地表层土壤除Cd外其余重金属含量在背景值范围内；鼎湖山和西樵山马尾松木质部中Cu、Zn、Cr和Pb含量均呈现从心材到边材上升的分布格局，反映了珠江三角洲环境中可供植物利用的重金属在过去有了增加。

Contents of Cu,Zn, Ni, Cr and Pb increased steadily in tree-rings from the heart-wood to sap-wood at both sites, reflecting the increase in the bio-availability in the Delta area during the past decades. Peaks in Cu, Zn, Ni and most obviously Cr and Pb, were found in rings formed in the periods after 1990. It was suggested that the recent increase of the heavy metals in soil and atmosphere in the Delta be the main cause contributed to the elevation of the heavy metals in the pine rings.

结果表明：西樵山马尾松林地表层土壤Cu、Zn、Cd和Pb含量均超过其在广东省表层土壤环境背景值，鼎湖山马尾松林地表层土壤除Cd 外其余重金属含量在背景值范围内；鼎湖山和西樵山马尾松木质部中Cu、Zn、Cr和Pb含量均呈现从心材到边材上升的分布格局反映了珠江三角洲环境中可供植物利用的重金属在过去有了增加。

The results showed that Cd and Zn mainly occurred in the fractions extracted by BCR method, namely, weak soluble fraction, reducible fraction and oxidisable fraction, which were 35.0%, 49.7 and 12.9% for Cd, 17.6%, 16.6% and 21.4% for Zn, respectively, in surface sediment.

结果表明，表层沉积物中的Cd和Zn主要以可提取态（即弱酸溶解态、可还原态和可氧化态）存在，其中，Cd在弱酸溶解态、可还原态和可氧化态中的含量分别为35.0%、49.7%和12.9%；Zn在三者中的含量也分别达到了17.6%、16.6%和21.4%。

After the research of anodic oxidation slag, we got the composition of the suspension electrolyte of zinc sulphate solution. 2 The results of electrode kinetic of anodic oxidation showed that the electron transfer during the process of electrochemical oxidation was 1, and the electrochemical mechanism was: ZnS=Zn~(2+)+S~-+e Zn~(2+)+2S~-=ZnS + S~0 3 The flow sheet which can produce zinc according to suspension electrolysis principle in industry was put forward. 4 Elemental sulfur in oxidizing slag was recovered by distillation.

本文的创新点是： 1提出了以硫酸锌溶液为基础的悬浮电解液体系；通过对阳极氧化渣进行系统的分析研究，得出了硫化锌矿物的悬浮电解的电解液组成； 2通过阳极氧化电极过程动力学分析得到，电化学氧化过程中电子转移数为1，电化学机理为： ZnS=Zn~(2+)+S~-+e Zn~(2+)+2S~-=ZnS+S~0 3提出了工业上利用悬浮电解原理生产金属锌的工艺流程； 4对氧化渣中的元素硫采用蒸馏法原理进行回收。

But the heavy metal elements of Cu, Zn in leaf were increased significantly with the increase of application of pig dung. These results suggested that the heavy metal elements of Cu, Zn would contaminate celery under the condition that application of abundant pig dung for long time.

施用有机肥后，芹菜未产生重金属污染，其叶片和茎重金属含量均低于国家卫生标准，但其Zn、Cu含量随猪粪施用量的增加而增加，由此推断长期大量施用猪粪可能会造成芹菜Cu、Zn元素的污染。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。