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According to the state standard of ocean sediment quality, threshold effective level and state standard of soil quality, the total contents of heavy metals in sediments from infall port were higher than those from the other parts of the lake which showed a combined pollution, the main pollutants being Cu, Cd, Ni and Zn.

根据国家海洋沉积物质量一类标准、生态危害临界值和国家土壤质量一级标准，湖泊进水口底泥中重金属的复合污染较严重，其它区域沉积物中的重金属全量也有不同程度的超标现象，底泥中污染重金属主要为Cu、Cd、Ni、Zn。

But at this point, you will buy only an ink-jet printer and not buy a CD-ROM drive.

但是在这指出，你仅买一台喷墨打印机而不买 CD-ROM 驱动器。

This allows you to search for files without the need for inserting theactual CD.

该软件允许你搜索文件而不需要插入真实的 CD 光盘。

Once the Fedora 7 installable media is ready burn the ISO image to a DVD or CD as per your selection.

一旦安装Fedora 7的媒体已准备好刻录ISO映像到DVD或CD按您的选择。

If no recognized viewer is found for that document then the software offers the User a choice of viewers installable from the CD.

如果对于该文档没有确定的浏览器，那么该软件将为用户提供一个从该 CD上可提供安装的浏览器的选择。

With pot experiments, the effects of heavy metal Pb, Cd and Cr on the photosynthesis, nutritional quality and food safety of the water spinach Ipomoea aquatica Forsk.

通过盆栽试验，分析了模拟酸雨条件下重金属Pb、Cd和Cr污染对蕹菜和扬花萝卜光合作用、营养品质及食用安全性的影响。

The results showed that the Langmuir equation could be used to describe the Cd(superscript 2+) adsorption isotherm.

结果表明，Langmuir模型适于描述棕壤对Cd(上标 2+)的吸附特征。

The decomposition of ammonium jarosite bearing indium in NaOH medium were studied. The effects of NaOH addition, liquid-solid ratio, decomposition temperature and time on the decomposition ratio of ammonium jarosite were investigated, respectively, and the behavior of impurity elements, such as Zn, In, Cu, Cd, Pb, As, Sb, Sn and Ag in jarosite residues was also discussed.

摘 要：提出NaOH分解含铟铁矾渣新工艺，考察NaOH用量、液固比、温度和时间对铁矾渣分解率的影响，并讨论铁矾渣中杂质金属，如Zn、In、Cu、Cd、Pb、As、Sb、Sn和Ag等在NaOH分解过程中的行为。

The results show that the decomposition rate of ammonium jarosite can reach 98.03% under the following optimum conditions, which are m m=0.381 41, temperature 60 ℃, liquid-solid ratio 21, reaction time 2 h. During the alkaline decomposition, the impurity elements, such as Zn, In, Cu, Cd, Pb, Sb, Sn and Ag are left in the residue, while As is leached into the pregnant solution as AsO43 with leaching rate of 83.36%.

结果表明：在 m m=0.381 41、温度60 ℃、液固比21、反应时间2 h的最优条件下，铁矾渣的分解率达到98.03%，而原料中的杂质金属，如Sn、Sb、Zn、In、Cu、Cd、Pb和Ag等绝大部分留在分解渣中，As则以AsO43的形态大部分进入溶液，浸出率达到83.36%。

InDisc Recovery is an easy CD or DVD data recovery software and supports ISO-9660, UDF and Joliet file system.

简介 ： inDisc Recovery 是一款用于擦伤或者有缺陷的 CD 和 DVD 光槃的数据恢复工具。

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。