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。
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。
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。
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。
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。
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。
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。
Conclusion the lead levels in venous blood of children in Shenzhen were lower, but control of blood lead should still be strengthened.
结论深圳市儿童血铅水平处于低水平，但仍需加强血铅控制。
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。
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。
On Friday, Toys R Us said it was removing all babies' vinyl bibs from its stores as a precaution after bibs made in China for one supplier showed excessive lead levels.
美国的玩具反斗城（ToysR Us）上周五表示，作为预防措施，该公司已将所有乙烯基儿童围兜从商店下架。此前，一位供应商的中国产围兜被检测出铅含量超标。
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。
After controlling these possible confounding variables by multiple regression, the contribution of the ALAD isozyme phenotype to the blood lead levels was still statistically significant.
采用多元逐步回归分析，发现ALAD基因型对血铅水平的影响在排除协变量影响后仍有极显著的统计学意义。
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。
Pot experiments and field trails were conducted to study the effect of soil lead levels on phytotoxicity, growth and tissue accumulation in soybean and rice grown on sludge treated calcareous soil.
采用盆栽和小区试验，研究在石灰性土壤上污泥施肥时铅污染对水稻和大豆生长发育的影响，两种作物对土壤中铅的吸收、迁移和累积规律。
Pot experiments and field trails were conducted to study the effect of soil lead levels on phytotoxicity, growth and tissue accumulation in soybean and rice grown on sludge treated calcareous soil.
采用盆栽和小区试验，研究在石灰性土壤上污泥施肥时铅污染对水稻和大豆生长发育的影响，两种作物对土壤中铅的吸收、迁移和累积规律。
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