FDA has not set a "tolerance level" for many of the drugs, pesticides and heavy metals found in beef, including copper and arsenic, which can promote growth and inhibit certain parasites.
食品药监局并未为许多自牛肉中发现的药物、农药和重金属元素设立“容忍标准”——包括铜元素和砷元素在内，这些添加物可以促进牛只生长及杀灭某种寄生虫。
Yet the alchemists had their triumphs, inventing brilliant new pigments, perfecting the old - red lead oxide, yellow arsenic sulfide, a little copper and vinegar and you've got bright green verdigris.
尽管如此，炼金术士还是获得了许多成就，他们创造了色彩鲜艳的天然色素，使原来的色素更完美——红色的氧化铅，黄色的硫化砷，少许铜加上醋，你就会得到明亮的绿色的铜绿。
For each child, the researchers measured the concentration of manganese in tap water from their home, as well as iron, copper, lead, zinc, arsenic, magnesium and calcium.
对于每一个孩子，研究者检测了他们家里自来水中锰、铁、铜、铅、锌、砷、镁和钙的含量。
The distribution and removal of Arsenic in heavy non-ferrous smelting such as copper, tin, lead and zinc are summarized.
并全面概括和介绍了铜、锡、铅、锌重有色金属冶炼过程中砷的分布和脱除情况。
The distribution and removal technology of Arsenic in the heavy metals such as copper, tin, lead and zinc smelting processes are introduced.
介绍了铜、锡、铅、锌重有色金属冶炼过程中砷的分布和脱除情况。
Using a mixed solution of thiosemicarbazide and ascorbic acid as reducing agent, arsenic is reduced and separated from precipitated copper.
本法使用硫代氨基脲-抗坏血酸作为还原剂，将砷还原同时将铜沉淀分离。
Cyclic voltammetry was also used to study the effect of content of cupric ions and arsenic ions on peak current density and peak potential of cyclic voltammetry graphs of copper electrodeposition.
并用循环伏安法研究铜砷共沉积过程中铜离子浓度、砷离子浓度等因素对铜沉积过程峰电流密度和峰电势的影响。
The pretreatment of silver concentrate with high arsenic, antimony and copper is followed by in-pulp electrolysis, the leaching rate of silver is over 95%.
富含砷、锑、铜的银精矿先经过预处理，再进行矿浆电解，银的浸出率达到95%以上。
Arsenic and fluorine contents were determined to obtain their distribution behavior in copper concentrate smelting and sulphuric acid production with the off-gas.
通过对铜精矿冶炼过程及冶炼烟气制酸过程砷、氟含量的测定，确定了在整个系统中砷、氟的分布。
Processes for extracting metals from the slurry and recovery rates of them, such as gold, silver, copper, antimony and bismuth, and measures of controlling arsenic pollution are discussed.
探讨了铅阳极泥中金、银、铜、锑、铋等金属回收方法与指标以及砷的污染防治措施。
A method of increasing recoveries of gold, silver and copper for the gold concentrate containing arsenic and copper cyanided after roasting pretreatment is presented.
提出了一种提高含砷铜金精矿焙烧-氰化工艺金、银、铜回收率的新方法。
In this paper, the study on making cupric sulfate with high arsenic bearing copper concentrate and the recovery of gold and silver are introduced.
介绍了以高砷铜精矿为原料，进行制取硫酸铜并回收其中金银的研究。
This paper summarizes the process features of purification arsenic removal of copper electrolyte by solvent extraction or continuous electrowinning and makes analysis and comparison.
总结了萃取法和连续电积法两种铜电解液净化脱砷新工艺的特点，并进行了分析比较。
Arsenic and chromium based water-borne preservatives, especially CCA (chromated copper arsenate), have been partly replaced by some copper based preservatives.
以铬化砷酸铜(CCA)为代表的水载型防腐剂，逐渐被其他主要有效成分为铜的水载型防腐剂取代，这类防腐剂中的。
It indicated that the method is simple, sensitive, accurate and short of analytical cycle, which can meet the demand for the determining copper, arsenic, cadmium, lead in athletic food.
该方法简单、快速、灵敏、准确，适用于运动员食品中铅、砷、镉、铜含量的分析。
This method can also be used as a reference for the treating arsenic containing copper, nickle or cobalt waste materials.
本方法还为含砷的铜、镍、钴废料的利用提供了参考途径。
The copper and arsenic can be removed by filter.
趁热过滤除去合金中的铜、砷。
High levels of Arsenic and Copper were found in his hair.
高浓度的砷，铜，发现在他的头发。
Elemental composition can vary within the same copper-ore lode, usually because of varying admixtures of other elements, especially iron, lead, zinc, and arsenic.
即使在同一铜矿矿脉中，元素构成也会发生差异，这一般是因为其它元素，尤其是铁、铅、锡、和砷等程度不同的混合。
Preservatives in common use include arsenic, copper sulfate and creosote etc.
常用防腐剂包括砷、硫酸铜和木馏油。
Preservatives in common use include arsenic, copper sulfate and creosote etc.
常用防腐剂包括砷、硫酸铜和木馏油。
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