查询词典 Zn

Heavy metal contamination in soils and vegetables in five environmental units, i.e. mining and smelting area, arterial traffic,factory,sewage irrigation plot and farm produce base, in 5 counties and 4 suburbs of Nanjing City were investigated.

采集了南京市5县4郊5个环境单元（矿冶区、交通干线、工厂周边、污灌地、农产品基地）共100个样点的农田土壤及部分蔬菜样品，测定了重金属（Pb、Cu、Zn、Cd）的质量分数。

According to geological characteristics of mineral area,geological conditions of mineralization,geochemical characteristics,material sources of mineralization,mineralization patterns,as well as physical and chemical conditions of mineralization,it summarize the mineralization pattern and genesis of ore deposit of Xianghualing mining areas,considering that mineralization materials in this deposit mainly come from magma,genesis patterns of deposit include high-temperature gas-liquid Nb、Ta deposit related to albitization laying in or on the edge of granite rock bodies,median-high temperature Skarn Sn,Be deposit related to skarnized laying at the inner contact-belt of granite and carbonate rock bodies;median-high temperature cassiterite -sulphide mineral deposit related to skamized laying at outer contact-belt of granite and carbonate rock bodies and median-low temperature hydrothermal liquid Pb-Zn-Ag deposit related to silicification,fluorite, propylitization laying in wall rocks;Series of generalized magma- hydrothermal liquid type Sn-polymatellitic related to magmatic activity in Yanshan period as a whole.

通过对矿区地质特征、成矿地质条件、地球化学特征、成矿物质来源、成矿作用、矿化型式以及成矿物理化学条件的分析，总结了香花岭矿区的矿床成因以及成矿模式，认为香花岭锡多金属矿成矿物质主要来源于岩浆，矿床成因类型包括花岗岩体内及其边部产出的与钠长岩化有关的高温气液型Nb、Ta矿床、花岗岩体与碳酸盐岩内接触带产出的与矽卡岩化有关的中高温矽卡岩型Sn、Be矿床、花岗岩体与碳酸盐岩外接触带产出的与矽卡岩化有关的中高温锡石硫化物矿床以及围岩中产出的与硅化、萤石化、青磐岩化有关的中低温热液型铅锌银矿床，整体构成与燕山期岩浆活动有关的广义岩浆热液型锡多金属成矿系列

The results showed that Na, Mg, K, Ca, Cu, Zn, Fe and Mn were found in both silk gland and silk fiber, while Rb and Sr were also possibly contained.

结果表明，在桑蚕丝腺体和丝纤维中含有钠、镁、钾、钙、铜、锌、铁、锰八种金属元素，同时还可能含有微量的铷和锶。

It was indicated by the CALPHAD that the solute content at the end point of primary solidification changes synchronistically with the start point, solute content in dendritic arm and the partition coefficient increase with the solid fraction. Simple Scheil equation was shown to be able to calculate the eutectic amount on the base of partition coefficient calculated by thermodynamics, its prediction for the different solutes is self--consistent and agreeable with the CALPHAD. The eutectic amount and SDAS was measured in DC experiment and compared to model value, it was shown that the experimental data are in agreement with the model prediction.

相图计算耦合Scheil模型的计算结果显示， Al--Cu--Zn合金单相凝固结束点的溶质含量与凝固初始点的成分同步变化，溶质含量和溶质分凝系数随凝固过程的进行不断增加；在热力学计算出合金分凝系数的基础上，简单Scheil方程可以计算初生相含量，从不同溶质得到的计算结果是自洽的，并与相图计算耦合Scheil模型的预测值一致；实验测定了不同成分铝合金的共晶含量和枝晶间距，实验数据与模型结果基本一致。

The experiments show that Zn〓 play a role of cathode depressant on natural siver flotation.

通过研究锌离子对自然银-捕收剂作用的影响，发现锌离子起阴极型抑制作用。

The heavy metals in various environmental mediums around a Ni-Cu mine in the City of Jinchang, Gansu Province, were analyzed using ICP-AAS. These mediums include the cultivated soils, the weathering and atmospheric deposition on waste slagheap surface, the tailings, and the sludge in the drainage ditch by the tailings.

对甘肃省典型矿业城市金昌市周围农田土壤、废渣堆表面风化物及降尘、尾矿坝尾矿砂和尾矿坝旁排污沟沉积物中Cr、Cu、Ni、Pb、Zn含量及其化学形态进行分析。

The contents,accumulation and distribution as well as biological cycles of 9 nutrient elements were studied in four 16-year-old experimental Slash Pine plantations with different density at Lufeng Mountain Forestry Farm in Guangxi Autonomous Region.

在广西禄峰山林场16年生4种不同造林密度的湿地松试验林地内，对N、P、K、Ca、Mg、 Cu、Fe、Zn、Mn 9种养分元素的含量、积累、分配和生物循环以及它们与密度间的关系进行了研究。

The contents of Ca. Mg. Mn. Zn etc 6 kinds of trace elements in 10 kinds of routine vegetables (eggplant. chrysanthemum coronarium, celery. carrot. summer squash. potato. cucumber, snap bean. tomato and green pepper) were determined by atomic absorption spectrometry.

方法］采用原子吸收光谱法测定10种常规蔬菜（茄子、茼蒿、芹菜、胡萝卜、西葫芦、马铃薯、黄瓜、豆角、西红柿、青椒）中钙、镁、锰、锌等6种微量元素的含量。

On the base of sodium hydroxide and zinc acetate to adsorb the sulfide and the sodium borate buffer added to enhance the deposition effect,the deposition of zinc hydroxide and zinc sulfide was separated from the solution by a centrifuge ,then the soluble sulfide was determined by the method of methylence blue.

在Zn(CH3COO)2和NaOH溶液固定硫化物和硼砂缓冲液加强沉淀效果的基础上，提出用离心法将硫化物从溶液中分离出来，采用亚甲基蓝法测定水样中硫化物浓度的方法。

The worthy metals Cu,Zn and cyanide sodium from the effluent of cyanideabstract gold have been retrieved.

国内首次采用萃取电积法处理氰化浸金贫液新工艺，进行半工业试验。

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。