查询词典 Zn

The PL spectra of the series Zn_xCd_(1-x)S nanocrystals have been revealed, from which we can find optical properties variation of the samples.

光致发光谱分析表明，随着Zn含量的变化，样品的发光峰位发生着规律性变化，我们可以通过改变Zn_xCd_(1-x)S中成分含量变化在一定范围内调控样品的发光性能。

The influence on the content of Zn~(2+) is not too. The maize seedling have the mechanism of Na~+-exclusion and have definite salt tolerance, the salt tolerance was implemented by root and mature sheath, Na~+ is mainly reserved in root and mature sheath, and the content of Na~+ was less to be transported to mature blade and young blade.

玉米幼苗具有拒Na~+机制，具有一定的耐盐性，它的耐盐性是根和成熟叶叶鞘来实现的，Na~+主要贮存在根系和成熟叶叶鞘中，而向成熟叶叶片和生长叶中运输较少。

Contents of Zn, Cu, Cd and Pb in Shell of oyster and offshore water from Dalian gulf, Laohu beach, Fujia Zhuang beach, Lingshui bay, Lvshun and Jinzhou are studied by Anodic Stripping Voltammetry in order to establish a relationship between offshore seawater and heavy metal content in shells. Through monitoring the seawater and shells we researched whether the shells could replace the soft tissue of oyster shells as an indicator of marine environment changes in hope of finding a more convenient and accurate carrier for monitoring marine heavy metal.

本论文以大连湾、老虎滩、付家庄、凌水湾、旅顺及金州六个区域的近岸海水及牡蛎贝壳为研究对象，应用阳极溶出伏安法对其锌、镉、铅、铜的含量进行分析，旨在通过监测大连近海水域及贝壳重金属含量来研究二者的相关性，探索是否可以利用贝壳替代贝类软组织来指示海域环境的变化情况，从而找到一种更为简便、更为可靠的监测海洋重金属的载体。

Zn adsorption and desorption characteristics on parent material of the alluvial deposit in the marine-face and sediment soils from Yangtze River Delta were investigated.

研究长江三角洲地区冲积物母质土壤的表层土、心层土对锌的吸附－解吸特性。

It was found that the content of Zn bound in polymeric matrix is all-important to the formation and optical activity for supramolecular aggregates.

由Et_2Zn和Et_2Zn／n-BuLi二元体系合成的聚合物在二价铜盐作用下发生独特的超分子聚集现象。

In this paper, we selected 4different sites around the Jiaozhou Bay to monitor the environmental quaIity: Hongdao, Shuangbu,Tuandao and Huiquan Jiao. Hongdao is a typical fishery village, Shuangbu is an area with heavyindusny and densely population; Huiquan Jiao is a tourism point, Tuandao is an area with factories,transportation and tourism.Instrumental neut...

结果表明，蛤仔对大多数元素的富集作用最强，是胶州湾典型的指示生物；双埠蛤仔体内的As和Cr的含量已超出食品卫生标准；团岛贻贝体内的Cd、Cu和Zn的含量已超出食品卫生标准和一般底栖生物的最高允许浓度，说明胶州湾不同区域已有了不同程度的重金属污染，且年际变化较为明显，重金属污染程度在不断加剧。

Based on the Miedema model and Tanaka equation, a new method for calculating the parameters in the molecular interaction volume model has been developed to predict the activity coefficient s of multicomponent liquid alloys, in which not experimental data but only some physical properties of elements are required.

基于Miedema模型和Tanaka关系，提出了计算分子相互作用体积模型参数的新方法。该方法仅需知道元素的某些物理性质而无须熔体的实验数据，简化了计算多元合金熔体活度系数的步骤。分别计算了Ti-6Al-4V和Ti-5Al-2.5Sn在不同温度下组元活度系数的变化，计算了多种铜基合金以及Zn-Sn-Pb-Cd-Bi合金的活度或活度系数与组元配比的关系；并与Wilson模型进行了比较，计算值与实验值较好吻合

The bamboo charcoal contained abundant mineral substance and microelements such as Cu, Se, Zn, Sr which are benefit to people, further more, the content of harmful metal elements is very low.

不同最终炭化温度竹炭中的碳元素的含量随着炭化温度升高而升高，而氢、氧元素含量则相反；竹炭含有丰富的矿物质和人体必须的微量元素如铜、硒、锌、锶等，而对人体有害的重金属元素含量很低或在安全范围之内。

Matrix metalloproteinases, a gene family of Zinc-containing endopeptidase, degrade extracellular matrix and play an essential role in the metastasis process.

基质金属蛋白酶是一类Zn~(2+)依赖的与细胞外基质降解有关的基质金属蛋白酶，在肿瘤的侵润和转移中起重要的作用。

Unsaturated fatty acid in the seeds of those three species were abundant and its total content is over 89%.18 kinds of amino acid were detected,8 of which are essential amino acid.Nearly all kinds of mineral elem...

3种栝楼种子都含有大量的不饱和脂肪酸，不饱和脂肪酸总量均在 89%以上；氨基酸共检出 18种，必需氨基酸有 8种，占氨基酸总量的 2 9%以上；矿质元素种类齐全，高 K低 Na的特点明显，以 Ca的含量较高，人体必需的 Fe、 Mn、 Cu、 Zn等微量元素的含量分别在 2 0 1、 5 6、 2 3、 6 8以上。

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。