In a study published in the journal Ambio, scientists found that lead levels in soil in the North-eastern United States had decreased markedly since the introduction of unleaded gasoline.
在《人类环境杂志》上发表的一项研究称，科学家们发现，自引进无铅汽油以来，美国东北部土壤中的铅含量已经显著下降。
Technology, quality international abode lead levels.
技术、质量居国际领先水平。
Her blood has lead levels of 261 — more than double the standards for safety.
她的血铅值在261，比安全标准值的两倍还多。
Health risks in children at various blood lead levels, in micrograms per liter.
不同的血铅水准对儿童健康的风险有别，以下数值单位为微克每升。
Methods Non flame atom absorptance was used to determine the blood lead levels.
方法采用非火焰原子吸收法测定全血铅含量。
The factory conducted blood tests and dismissed those whose lead levels were elevated.
工厂对工人验血，辞掉那些血铅含量超标的人。
The risk of death from cancer did not increase at the blood lead levels that our study investigated.
癌症死亡的危险性在我们的研究观察的血铅水平上没有增加。
Studies show even slightly elevated lead levels can lead to permanent neurological damage and reduced IQ.
研究表明，血铅含量略高于这一水准都会导致永久性的神经损伤与智商下降。
Children with higher blood lead levels did less well in IQ tests, number skills and reading ability.
血液中铅含量较高的儿童在智商测试、数字技能和阅读能力等方面表现欠佳。
The official Xinhua news agency said that at least 200 children in the area had elevated lead levels.
官方新华日报代表报道说，这个地区至少有200名儿童已经挺高了铅等级。
Zhou Hao has lead levels that, due to blood transfusions, have swung between 262 and 557, his parents say.
周浩的父母说，由于输血，周浩的血铅值在262到557之间摇摆。
Researchers said the study questions the current belief about what lead levels are safe in the population.
研究者称该研究对当前信奉的人群血铅水平的安全值产生质疑。
Objective To describe blood lead levels (BLLs) and the distribution character of children in China as a whole.
目的描述我国儿童血铅整体水平及分布特征。
Conclusion: Children with blood lead levels of blood cadmium pollution and unhealthy habits are closely related.
结论：儿童血铅血镉水平与环境污染及不良的生活习惯有密切关系。
Methods Lead levels were measured for 44 samples of stationery and 43 samples of drinks with government standard method.
方法选购市场销售小学生常用品牌文具44份，常饮果酸饮料43份，样品处理与测定方法按国家标准进行。
The tests reveal that lead is commonly found in lipstick, and that companies are making products with lead levels all over the board.
这个测试说明铅在唇膏中可以被发现，这些公司正在生产含铅的产品。
VDR gene has been implicated in the control of calcitriol levels in serum, which normally regulates calcium absorption and can in turn affect lead levels.
VDR基因能控制血清中的钙三醇含量，从而控制钙的吸收，并反过来影响骨骼中铅的蓄积。
Recent work also suggests that cadmium and lead levels are higher in lung tissues of current and former smoking lung cancer patients relative to non-smokers.30.
最近的研究同样表明因吸烟患上肺癌的病人肺组织的镉和铅水平高于不吸烟的人。
Methods: the complete data case of illness 842 examples were divided into rickets group, control group, the treatment group, and compared their blood lead levels.
方法：将资料完整的842例患儿分为佝偻病组、对照组和治疗组，比较其血铅水平。
At two high lead-exposure factories, the Chinese New Year break provided a chance to investigate the effect of such short breaks on the workers' blood lead levels.
针对两个高铅暴露工厂，因年假停工，借此了解短时间停止作业，对员工血铅的影响。
The mean blood lead levels in the 12-to-19-year-olds were 1.5 micrograms per deciliter in 1991 to 1994 and 1.1 micrograms per deciliter from 1999 to 2000, researchers say.
研究人员说，从1991年到1994年，12至19周岁美国人的平均血铅水平在0.015微克每毫升；1999年到2000年这一数字变为0.011微克。
Using alone blood lead levels to divide patients into poisoning degree is not good enough, complex utilization of the national diagnostic criteria for lead poisoning is reasonable.
仅以血铅值来划分中毒程度欠妥，还应以现行国家慢性铅中毒诊断标准综合分析进行中毒分级。
In certain instances, cases of acute poisoning may still be seen in children who are chronically exposed and whose blood lead levels reach levels that interfere with normal functions.
在某些情况下，在慢性接触的儿童中仍可见到急性中毒病例，其血液中含铅量达到可干扰其正常功能的程度。
Ms.Deng says her company decided to shut down its painted-toy operations after unsafe lead levels were found in paint used by a nearby factory that supplied toys recalled by Mattel Inc.
邓喜玲表示，附近有一家玩具厂供应给美泰公司(Mattel Inc.)后被召回的产品被发现涂料含铅量超标，那之后，公司决定停止涂漆玩具的业务。
Chinese products have been riddled with safety issues in the past year, including the current tainted milk scandal, poisonous pet food and toys with high lead levels, among other problems.
过去一年时间里，中国产品一直被安全问题所困扰，包括被污染的宠物食品、含铅玩具以及最近的毒牛奶事件等等。
But the scientists say their findings are worrisome and emphasize the urgent need for studies that track lead levels and kidney function over time to better understand the interplay between the two.
但科学家认为他们的研究结果令人担忧，现在迫切需要研究并更深入理解痕量铅水平与肾脏功能的长时间作用关系。
Objective To compare the effect of different blood-lead levels on sensory integrative treatment in preschool children, and provide a basis for preventing abnormal behavior problems efficiently.
目的比较不同血铅水平儿童的感觉综合训练效果，为有效预防儿童异常行为的发生提供依据。
Objective To compare the effect of different blood-lead levels on sensory integrative treatment in preschool children, and provide a basis for preventing abnormal behavior problems efficiently.
目的比较不同血铅水平儿童的感觉综合训练效果，为有效预防儿童异常行为的发生提供依据。
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