锌

The results show that Bi and Sb are mainly distributed on grains and grainboundaries, and Bi on grainboundaries there are mainly simple substance Bi particles, Sb in grains are intermetallics containing stibium. The tensile strength, yield strength, elongation and variation of area of halfhard brass containing bismuth and stibium are 478.9 MPa, 295 MPa, 15.1% and 29.3% respectively. Corresponding to HPb59-1, the cutting property of brass containing bismuth and stibium is excellent. The brass containing bismuth and stibium shows excellent dezincification corrosion resistance, and the depth is 323 μm.

结果表明：添加的Bi和Sb主要以单质或化合物方式存在于无铅黄铜的相内和相界处，Bi以单质颗粒存在于相界处，Sb以化合物形式存在于相内，这对提高合金切削性能有利；添加Bi和Sb黄铜的抗拉强度为478.9 MPa，伸长率为15.1%，断面收缩率为29.3%，屈服强度大约为295 MPa；添加Bi和Sb黄铜的切削性能比HPb59-1铅黄铜的优，合金的脱锌腐蚀性能良好，脱锌层厚度约为323 μm。

Therefore, the best of the daily life of zinc supplementation through food.

所以，日常生活中最好的补锌办法是通过食物补锌。

Objective To find out the effective limits of zinc supplementation for subhealth and to study the possible mechanism.

目的 探讨补锌对临床亚健康干预的合理剂量以及高锌对脑功能的影响及机制。

In chapter three, various theories and experience on the dispersion of nano-powders proposed by former researchers were generalized and reviewed. Technical standards and experimental process for determining technological parameters were suggested for the dispersion of nano-scaled metal oxides in aqueous medium according to their surface wettability, surface charge, the dependence of surface charge on pH and the compatibility of surfactants with pH and pH adjusting agents. Based on these suggested standards and experimental method, highly stable and dispersive aqueous suspensoid of nm-ZnO, nm-TiO〓, nm-Co〓O〓 and nm-MnO powders were prepared successfully and surface modification on these nano-powders was also achieved.

本文第三章通过大量的文献调研，归纳总结了前人在纳米粒子分散技术方面的理论和经验，并在此基础上根据纳米氧化物粉体的表面润湿性、表面电性及其与分散介质pH值的关系、表面活性剂及其与pH调节剂的配伍关系设计了纳米氧化物水分散体系的工艺规范以及确定工艺参数的通用实验步骤，成功地制备了纳米氧化锌、纳米二氧化钛、纳米氧化钴和纳米氧化锰的高稳定分散悬浮液并实现了干粉体的表面改性，为纳米材料在氧化锌压敏电阻中的应用创造了第二个前提条件。

The second type of motif,the zinc finger,consists of a peptide loop with either two cysteines and two histidines or four cysteines at the base of the loop that tetrahedrally co-ordinate a zinc ion.

另一种基序称为锌指，由一个肽环构成，在肽环底部是两个半胱氨酸和两个组氨酸或四个半胱氨酸，与锌离子配位形成面体。

In applications, the complex structural phases of ZnO tetrapod nanocrystals were investigated and determined.The results showed the wurtzite and zinc-blend phase in the leg part and the core part,respectively,which also agreed well with the Raman spectra and calculation data.

将建立的纳米微区结构相的测量分析技术应用于四脚ZnO的脚和芯的结构测量，证明脚处的纤锌矿结构和芯部的闪锌矿结构。

Investigation data obtained at 14 days after applied second time indicated that the efficacy of Zn thiazole 20% SC applied at

噻唑锌是噻二唑类有机锌杀菌剂，对水稻细菌性病害有较好的防治效果。

The problem that noxious chrome of sexavalence and trivalence is present in the galvanizing coat and passivating solution of the prior art is solved substantially by the passivating solution of the present invention.

本发明提供的无铬钝化液可以从根本上解决了现有的产品镀锌层及钝化液中含有有毒有害的六价铬和三价铬元素的问题，并可真正替代现有的含有六价铬和三价铬的铬酸盐钝化液，实现对电镀锌层和热镀锌层的钝化。

Therelationship between solution rate of Al/TiC alloy in rotating Zn melting and thetemperature of Zn melting, rotating rate of axis and uniformization time wascalculated.

分析了各工艺参数对Al／TiC预制合金在锌液中溶解速度的影响，建立了Al／TiC合金在锌液中的溶解率与各参数间的关系式。

Variegate had higher protein content and lower fat content and had microelements of Fe, Zn and Cu with some amount and the content of Zn, Cu, Pb and Cr were all lower than the limits of the metals in national free-pollutant seafood safety requirements (GB18406.4-2001) and could meet the microelements requirements of human body.

结论］青蛤和杂色蛤的蛋白质含量较高，脂肪含量较低，含有一定量的微量元素铁、锌和铜，且锌、铜、铅、铬的含量均低于我国无会害水产品安全要求(GB18406.4-2001)中的限量标准，可满足人体对微量元素的部分需要。

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。