查询词典 Zn

A similar initiator, Et_2Zn/-Sparteine, yielded polys with threo-diisotactic -rich structure in the main chain, indicative of strongly asymmetric inducation in this system. In this case, no polymeric complexes in-site formed because of the intensive coordination between sparteine and Zn ions.The binary initiating system composed of Et_2Zn and n-BuLi combined the advantages of both metal alkyls, which gave the polymers with higher molecular weights and moderate optical activity ~(25_D =-97.1°～+24.3°.

Et_2Zn／n-BuLi二元引发体系综合了两种金属烷基化物的优点，得到了分子量相对较高(M_n=1.4x10~3～4.9×10~3)且含有手性超分子结构的光学活性聚合物；聚合物中锌含量的微小变化可引起聚合物光学活性明显改变，超分子手性与聚合物侧基的绝对构型存在关联。

Zn England, it is easy to tell what part of the country someone was born in form his speech.

在英国，很容易从一个人的说话方式中认出他出生在该国的什么地区。

The preparation process of Mn-Zn ferrites includes three stapes:powder preparing,shaping and sintering.

锰锌铁氧体的制备包括三个步骤：粉末制备、成型和烧结。

The XPS results showed that in one special sample a small portion of Zn~2+ may occupied the spinel crystal of B sublattice.

通过XPS分析，发现内加磁晶和外加磁场的条件下，可能有一部分的锌进入了尖晶石的B位。

Sulfuration is commonly found on the surface of the minerals.

质粒DNA评价结果表明，沙尘暴颗粒物对DNA的损伤明显低于非沙尘暴期颗粒物，PM2.5对DNA的损伤明显高于PM10，北京市大气颗粒物的生物活性主要来源于其中的水溶组分，尤其是水溶性Zn。

Investigation of silver minerals in these ore deposits shows that the silver-bearing tetrahedrite and freibergite are among the most important or main industrial silver minerals.

按国际矿物学协会新矿物及矿物命名委员会的矿物命名原则，黝铜矿族矿物所含的Fe、Zn、Hg、Cd、Mn等不可作为矿物种的命名元素。

In this paper, ZnO tetrapod nanostructures have been synthesized successfully in the air using Zn particles as the starting materials at high temperature.

以锌颗粒为原料，在空气气氛下，高温制备出了大量的ZnO四足状纳米结构，产物呈现出两种截然不同的形貌。

The difference between the two Zn thermocouple is higher than 20°C.

两个锌液热电偶之间不同的温度相差20°C。

Mn-Zn-ferrite ; Curie temperature ; thermomagnetic effect

锰锌铁氧体；居里温度；磁热效应

Results:(1) Intake of vitamin A, vitamin C, thiamin, riboflavin, Ca, Mg and Zn was lower than reference nutrient intake or adequate intake certified values of Chinese Society of Nutrition.

结果： (1)大学生维生素A、维生素C、硫胺素、核黄素、钙、镁、锌等微量营养素平均摄入量均低于中国营养学会推荐摄入量或适宜摄入量标准值。

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。