查询词典 Zn

On the other hand,the cupronickel welded joint formed by using cupronickel rod had better corrosion resistance in seawater due to the microstructure of Cu-Ni-Zn ternary alloy solid solution with single-phase structure of α.

海水系统主要采用铜及铜合金制造，其优点是耐海水腐蚀和抗污损能力强，维修次数少，全寿命成本低，可靠性高，因此在船舶等行业得到了日益广泛的应用[1~6]。

The aim of research was to study the effect of chaff xanthogenate on removal cuprum, zincum, nickel ions from wastewater.

［目的］制备并研究谷壳黄原酸盐对Cu(上标 2+)、Zn(上标 2+)和Ni(上标 2+)3种重金属离子的捕集效果。

The amino acid histidine and cysteine are the most frequently occurring ligands of zinc in physiological processes.

但在测定生物活体内的游离Zn~(2+)的浓度方面仍存在一定的困难。

The process of ecological degradation in the vicinity of Shaoguan Pb/Zn smelter may be summed as: heavy metals and acidic deposits from the waste gas from smelter resulted in the vanishment of the sensitive plant species, increasing accumulation of heavy metals in soils and acidification of topsoil worsened the chemical properties and then shallow-rooted plant, mainly the herbaceous, vanished. With the demolishment of the vegetation cover, increasing water-soil erosion worsened physico-chemical properties of soil and, subsequently, some woody plants disappeared and barren land was finally appeared.

该生态系统的退化过程可以归纳为：来自于冶炼废气的重金属和酸沉降导致了敏感植物的消亡，丧失了对土壤的缓冲保护作用；重金属在土壤表层的积累，酸性物质在土壤表层的增加导致的土壤酸化以及由此引发的有机质与养分的淋溶和重金属及Al的活性增加，加剧植被的快速退化，特别是浅根植物的衰亡；地被层的破坏，导致水土流失和土壤侵蚀加深，进一步恶化表层土壤的理化性质，一些木本植物随之消失，最终形成光板地。

The influence of the ore fineness and the reductant content on the deoxidization process was studied.

摘 要：以生物制剂KZSH01作为还原剂与铁锰多金属矿发生氧化还原反应，研究了铁锰矿的细度和还原剂的含量对还原效果的影响，考察了还原过程中温度和物相的变化，探讨了H2SO4用量对Mn和Zn浸出效果的影响。

And it can change the value of oxidation and deoxidize of the water. It can also decompose water.

试验结果表明，电气石对水中的Cu~(2+)、pb~(2+)、Zn~(2+)等重金属离子有良好的吸附效果。

It has the negative correlation with Cu、nicotine,has positive correlation with Zn、Cl and has negative correlation with deoxidize sugar/N.

因此深入研究土壤肥力与烟叶化学成分的关系，了解土壤肥力对烟叶化学成分的影响，能为改善植烟土壤环境、提高烟叶质量和合理施肥提供一定的科学依据。

ConclusionThe best concn. of Zn for detoxication was 10 mg/L.

结论］锌的最佳解毒浓度为10mg/L。

The most possible reason for the production of it is the disproportionation of dimethylamine.

调整Cu-Ni比例或加入Zn、Mg之所以能调整催化剂的选择性，主要是由于催化剂组份的调整影响了NiO的还原程度。

Based on this, a new method for the direct determination of trace Zn was established.

该方法操作简便快速，具有极高的灵敏度，可用于水样中痕量锌的测定。

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。