The United States has restricted lead content in paint since nineteen seventy-eight.
美国自1978年以来限制油漆中含铅量。
The lead content was no significant difference between raw tea and ripened tea from the same sources.
云南相同主产地的生茶和熟茶中铅含量没有显著性差异。
To observe the relationship between lead content in blood and urine and acute tetraethyl lead poisoning.
目的观察血铅和尿铅含量与急性四乙基铅中毒程度之间的关系。
Objective: To study the effects of lead content in blood and nutrition status on 9 ~ 11 years old children for their growth and development.
目的：研究9 ~11岁儿童血铅含量和营养状况对儿童生长发育的影响。
The Safe Drinking water Act Amendment of 1986 prohibits the use in potable water systems of any solder having a lead content in excess of 0.2%.
G 1986年颁布的《美国安全饮用水法》规定，任何用于饮用水系统的焊料其铅含量不得超过0.2%。
The importance of lead removal of propolis, the sources of lead in propolis and the solutions to reduce lead content in propolis were introduced.
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。
It might probably be one of practical ways to decline the lead content of tea by planting some woody plants between the tea garden and the highway.
在茶园靠公路一侧种植适当的树木是降低茶叶中铅元素含量的有效方法之一。
The few lead content is beneficial in the precious metal cyaniding, but the high lead content in the gold concentrate roasting-cyaniding is harmful.
少量的铅含量在贵金属的氰化提金工艺中是有益的，但铅含量过高在金精矿的焙烧—氰化提金过程中是有害的。
Methods The urinary lead content and urinary NAG activity of 135 lead-exposed workers in one storage battery plant and 52 normal controls were detected.
方法对某蓄电池厂135名铅作业工人及52名非接触者进行了尿铅含量及尿nag活性测定。
This method can be operated easily and fast. The detection limit is low while the sensibility is high. So it is a better method to measure lead content.
该方法操作简便、快速、检出限低、灵敏度高，是检测微量铅含量一种较理想的方法。
Correlation analysis indicated that there were significantly negative correlations between soil biomass carbon and urease activity with available lead content in the soil.
土壤有效铅与土壤微生物生物量碳及土壤脲酶呈显著负相关。
The effects of cooling velocity, the lead content and the gravity on the microstructures of Al Pb alloy were discussed based on the results of optical microscope, SEM and quantitative metallography.
利用光学显微镜、扫描电镜、定量金相等技术研究了冷却速度、铅含量、重力作用等对铝铅合金显微组织的影响。
The effects of cooling velocity, the lead content and the gravity on the microstructures of Al Pb alloy were discussed based on the results of optical microscope, SEM and quantitative metallography.
利用光学显微镜、扫描电镜、定量金相等技术研究了冷却速度、铅含量、重力作用等对铝铅合金显微组织的影响。
应用推荐