锌

The color reaction of Zn(superscript 2+)-SCN(superscript -)-crystal violet in the presence of β-cyclodextrin and arabic gum has been studied and a new spectrophotometric method has been developed for the determination of zinc in water.

研究了在β-环糊精和阿拉伯树胶存在下，锌与硫氰酸盐和结晶紫的显色反应，建立了光度法测定水中微量锌的新方法。

Adding N, P could improve cucumber root activity, increased the absorptionof N, P and Mg, decreased that of K; Adding N improved the contents of Ca,Fe, Mn and Zn in leaves, and adding P accelerated absorption of cucumberroot to Fe. Adding K decreased the contents of N, P in leaves, but increased K,Fe content, contents of Ca, Mn and Zn decreased at the same time.4. Adding the rates and ratio of N, P, and K increased the activity of SOD incucumber leaves and root. The changes of POD activity were complex, maybeP played the more important role.

增加氮、磷的用量和配比有利于增强黄瓜的根系活力，促进黄瓜对氮、磷的吸收，减少对钾素的吸收，提高叶片镁含量，增氮提高了叶片中钙、铁、锰和锌的含量；增磷促进了植株对铁的吸收；增钾降低叶片中氮、磷含量，增加植株对钾的吸收，提高了叶片中铁的含量，但钙、锰和锌的含量降低。4。

Therefore the governance of pollution has become widely problem which attracting people's attention. In Agriculture, Cupper and zinc are required microelements of plant.

在农业生产过程中，铜和锌既是植物生长发育所必需的微量元素，同时过量的铜和锌也将对作物产生严重的危害，并由此引发一系列食品安全问题。

ABSTRACT Localization of zinc in the carp retina in both light and dark adaptation was investigated using neo-Timm sulfate silver method.

本文应用 neo-Timm染色法，观察了鲫鱼视网膜内锌离子的分布情况以及明、暗适应条件下鲫鱼视网膜内锌离子分布的变化。

The reductive dechlorination of trichloroethylene by surface-bound Fe in ZnO-Fe systems was studied by batch experiments.

通过批量实验研究了在氧化锌-Fe混合体系中，束缚在氧化锌表面的Fe对三氯乙烯的还原脱氯作用。

It has long been known that the poor corrosion resistance of brass in certain environment is due to the phenomenon of dezincification.

采用显微组织分析和脱锌腐蚀实验方法，研究了不同铋含量对黄铜的微观组织以及黄铜脱锌腐蚀性能的影响。

Dezincification is normally associated with brass valves where the zinc content exceeds 15%.

脱锌现象通常发生在锌含量超过15%的黄铜阀门上。

The effect of cold-deformation amount and annealing temperature on the dezincification of the unleaded free-cutting brass were investigated.

采用脱锌腐蚀深度测量方法，光学显微镜分析和SEM等分析方法，研究了不同的冷变形量和退火温度对无铅易切削铋黄铜的耐脱锌腐蚀性能的影响。

" High Copper, Low Zinc Brass Castings for Dezincification Resistance"

锌含量低的高纯度的铜铸件，有效防止锌泄漏

To begin with the phenomenon and characteristics of dezincification of brass, the review is made on the mechanisms, prevention and influence factors of dezincification .

从黄铜脱锌的现象、特征及其影响因素出发，对黄铜脱锌的优先溶解机制、溶解－再沉积机制、双空位机制和渗流机制等进行了描述。

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。