锌

A method for the determination of lead, arsenic, chromium ,copper and zinc in soil is described.

建立了土壤中铅、砷、铬、铜和锌含量的连续快速测定方法。

The flotation behavior of marmatite and arsenopyrite and the effects of Cu2 and organic depressant PALA on their floatability were studied.

通过浮选试验研究铁闪锌矿和毒砂在丁黄药作用下的浮选行为，以及Cu(上标 2+)和有机抑制剂PALA对它们可浮性的影响。

The flotation behavior of marmatite and arsenopyrite and the effects of Cu2+and organic depressant PALA on their floatability were studied.

摘 要：通过浮选试验研究铁闪锌矿和毒砂在丁黄药作用下的浮选行为，以及Cu2+和有机抑制剂PALA对它们可浮性的影响。

The main mineral in the ore is marmites, pyrrhonist and arsenopyrite, rich in silver, gallium, germanium, indium and other rare metals.

摘 要：原矿中的主要金属矿物是铁闪锌矿、磁黄铁矿和毒砂，富含银、镓、锗、铟等稀贵金属。

This article provides the synthesis methods of high purity Arsine by arse nic,zinc and sulfuric-acid.

介绍了用砷、锌和硫酸合成高纯砷烷的方法，产品纯度为99.995%，总收率为85%。

Clean reports Luo Yi of Yao Zhide of reporter of report from our correspondent, reporter: The reporter learns from yellow Bu custom, should close custom of subordinate new pool to use a few days ago " system of the auction on net of the goods that keep tax ", undertake to leftover material of ingot of alloy of 3000 kilogram zinc net arsis sells, clinch a deal smoothly finally with 52000 yuan.

本报讯 记者姚志德、通讯员罗翌洁报道：记者从黄埔海关获悉，日前该关下属新塘海关利用"保税货物网上拍卖系统"，对3000千克锌合金锭边角料进行网上拍卖，并最终以52000元顺利成交。

In the majority of roofs, timber is the principal material used, together with numerous others, such as tiles, slates, asbestos cement, tar felt, asphalt, lead, copper , zinc, aluminium, etc.

而大多数屋面的主要建筑材料为木材，与之相配的其它材料有粘土瓦、岩板、石棉瓦、油毡、铅、铜、锌、铝等。

In the majority of roofs, timber is the principal material used, together with numerous others, such as tile s, slates, asbestos cement, tar felt, asphalt, lead, copper, zinc, aluminium, etc.

而大多数屋面的主要建筑材料为木材，与之相配的其它材料有粘土瓦、岩板、石棉瓦、油毡、铅、铜、锌、铝等。

In the majority of roofs, timber is the principal material used, together with numerous others, such as tiles, slate s, asbestos cement, tar felt, asphalt, lead, copper, zinc, aluminium, etc.

而大多数屋面的主要建筑材料为木材，与之相配的其它材料有粘土瓦、岩板、石棉瓦、油毡、铅、铜、锌、铝等。

The content of mineral elements in ripe fruits of M.sieversii from 78 seedings at Mohe Town,Gongliu Country were analyzed using Atomic Absorption Spectrophotometer.The results indicated that M.sieversii seedings presented considerable genetic variations in content of mineral elements with the range of variation coefficients from 24.2% to 54.0%.So it has large potential for further selection.Four elite seedlings were selected,namely large fruit type,high Ca content type,high Zn content type and high damascenone content.As the predominant component of Ily wild fruit tree forest,Malus sieversii had occupied an area of 9300ha.But the inherent reproduction system of M.sieversii and genetic diversity of the species were destructed in different degrees,as a result of farming assart,over grazing and damage by Agrilus mali.

上述结果支持"新疆野苹果可能是栽培苹果祖先种"的结论；②对巩留县莫舍乡的新疆野苹果78个实生株系果肉组织Ca、Mg、Fe、Zn、Cu、Mn6种矿质营养元素进行测定的结果表明，每种矿质元素含量单株间差异显著，变异系数在24.2％～54.0％，遗传多样性丰富，进一步选择的潜力很大；③根据新疆野苹果果实形态、香味物质和矿质元素含量等的测定结果，初步筛选出了大果型、高钙型、高锌型和大马酮型等4个特异性状单株；④调查发现，由于农田开垦、过度放牧以及苹果小吉丁虫的蔓延危害，目前伊犁野果林面积逐年减少，野苹果固有的繁育体系和遗传多样性受到不同程度的破坏。

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。