简述了蜂胶除铅的重要性、蜂胶中铅的来源和降低蜂胶铅含量的方法。
The importance of lead removal of propolis, the sources of lead in propolis and the solutions to reduce lead content in propolis were introduced.
空气中的铅来源很广，包括熔炼厂和钢铁厂。
Lead in the air comes from myriad sources, including smelters as well as iron and steel foundries.
但是从那时起，生产铅酸蓄电池的工厂成为新的铅污染来源，这成了巨大的讽刺。
But since then, a new source of lead pollution - factories that produce lead-acid batteries for electric bikes, motorcycles and cars - has emerged with a vengeance.
在一名儿科医生看来，筛选油漆以外的铅来源势在必行。
From a pediatrician's perspective, it's good to push for screening of nonpaint sources of lead.
铅冶炼厂可以几乎全部使用报废的汽车电池作为它们的主要的铅的供应来源。
Lead smelters may use almost entirely scrap automotive storage batteries as their essential lead supply.
本文论述了环境铅污染与健康，包括污染物的来源、毒性危害和分析方法。
The article discusses on the relationship of environmental lead pollution and health, which covers pollutant sources, toxicity hazard and analysis method.
本文综述了铅在环境中的来源、分布、迁移、转化及其对生态系统的影响。
The source, distribution, transformation, transportation of lead in the environment and its effect on ecological system had been concluded, in this paper.
金矿床的铅、氢、氧和硫同位素组成高度分散，表明成矿物质具有多来源性。
Scattered distribution of lead, hydrogen, oxygen and sulphur isotopes in the gold deposits is possibly indicative of diverse sources of ore_forming materials.
近年来铅同位素示踪在研究土壤中相关重金属来源及其运移途径起到独特的作用。
In recent years lead isotope tracing has been playing its unique role in studying the source and migration of heavy metals in soil.
讨论了铅污染的主要来源，并进行了儿童铅中毒的预防对策研究。
The main source of lead pollution and the preventive method of child lead poisoning were discussed.
用硫、碳和铅同位素组成说明成矿物质的复杂来源。
The isotopic composition of lead, sulphur and carbon demonstrate a complex source of ore forming material.
论述了环境空气中铅染的主要来源是机动车排放的尾气，推广使用无铅汽油可明显降低机动车尾气排放对环境空气中铅污染。
The released vehicle exhaust was mainly sources of the lead pollution on the environmental air. The unleaded gasoline may reduce the lead pollution in environmental air of the vehicle exhaust release.
铅同位素是示踪成矿物质来源的重要手段之一。
Pb isotope is one of the important methods to reverse the origin of ore-forming matter.
陶瓷餐具的制作方法分为釉上彩、釉下彩、釉中彩三种，其中的有害金属铅、镉等主要来源于釉上颜料。
Methods of making ceramic tableware are overglaze color, underglaze color and glazed. The harmful metals like cadmium and lead are mainly from the enamel paint.
《范铸》一文再次提出有关问题，认为铅同位素分析结果不能确切指示青铜器铜锡铅原料的来源信息。本文考察了其依据的实验数据，它们似乎与其观点互相矛盾，其结论说服力相当有限。
Qin et al raised some related questions once again and stressed that lead isotope analyses could not reveal the source information of copper, tin or lead in bronze research.
矿石铅同位素组成稳定，为正常普通铅，矿石铅来源于早白垩世上地壳物质部分熔融形成的岩浆。
The Pb isotopic composition of ore sulfides is stable and the ore lead is ordinary common lead. Ore lead derived from magma, which came from partial melting of the upper crust in Early Cretaceous.
矿床中的原 始铅主要来源于地壳深部或上地幔；
The primitive Pb was mainly derived from the lower crust and upper mantle;
勇敢的动物几十铅通过20多个精心准备的水平，显示其背后的神秘邪恶的一个独特的回合制游戏的来源真相。
Lead dozens of courageous animals through more than 20 carefully prepared levels and reveal the truth behind the source of mysterious evil in a unique turn-based game.
勇敢的动物几十铅通过20多个精心准备的水平，显示其背后的神秘邪恶的一个独特的回合制游戏的来源真相。
Lead dozens of courageous animals through more than 20 carefully prepared levels and reveal the truth behind the source of mysterious evil in a unique turn-based game.
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