查询词典 lead-free

Hematic lead is the sensitive index that reflects near future lead to contact a level, closely related the plumbic chroma in hematic lead and air, as better as other index dependency.

血铅是反映近期铅接触水平的敏感指标，血铅和空气中的铅浓度密切相关，和其它指标相关性较好。

The principle flowsheet consist of speed flotation to obtain lead and zinc concentrat in high quality;lead and zinc middle product mixed,after finegrind,was treated in luck flotation to obtain lead and zinc bulk concentrate.

北京矿冶研究总院和凡口铅锌矿共同研发的新四产品工艺流程，其原则流程为快速浮选得高铅精矿和高锌精矿、铅锌中矿合并细磨混合浮选得铅锌混合精矿。

The detection methods of high level and trace level lead content,the status quo and technology such as pyrometallurgy and hydrometallurgy of the recycling of lead from spent lead-acid battery worldwide were introduced.

对高含量和痕量铅的检测方法、国内外从废旧铅酸电池中回收铅的现状和工艺，如火法冶金和湿法冶金进行了介绍；对废旧铅酸电池中铅回收的发展趋势进行了分析。

Lead Excreting Milk Powder; experimental saturnism ; fecal Lead ; blood lead

排铅奶粉；实验性铅中毒；粪铅；血铅

Ore deposits of this region are assigned to Caledonian metallogenic series and Indosinian metallogenic series according to ore-bearing strata, granites related to ore deposits mineralization type and temporal-spatial distribution characteristics of ore deposits. The Caledonian series is further divided into three subseries, namely lead and zinc metallogenic subseries, lead, zinc and iron metallogenic subseries and lead, zinc, tungsten, tin and molybdenum metallogenic subseries.

本文根据所发现的25个矿床的赋矿地层、与成矿有关的花岗岩、矿化类型及其时、空分布特征，将它们划分为加里东期成矿系列和印支期成矿系列，进而又将加里东期成矿系列划分为铅、锌成矿亚系列，铁、铅、锌成矿亚系列和铅、锌、钨、锡、钼成矿亚系列。

The result indicated the soil catalase and urease activities and the soil lead concentration is extremely remarkable is connected, may express the lead pollution degree; The lead pollution soil after the Digitaria sanguinalis repair, the catalase and urease activities obtains the restoration, is good according to theirs revivification estimate of the situation Digitaria sanguinalis repair effect.

结果表明土壤过氧化氢酶和脲酶活性与土壤铅浓度极显著相关，可表示出土壤受铅污染程度；铅污染土壤经过马唐修复后，过氧化氢酶和脲酶活性均得到恢复，根据它们的活性恢复状况判断出马唐修复效果较好。

Vehicle's collision with the speed control hump would lead to vehicle damage, driving unconfort, noise pollution and speed control hump would lead to damage. The units of speed control hump were laid dividually in transverse direction to solve the problems. Inequations were given to guarantee that vehicles would not tilt when passing speed control hump would lead to.

提出将垄单元横向间断布设以解决车辆与减速垄反复碰撞造成车辆损坏、驾乘舒适性差、周边环境振动、噪音污染和减速垄损坏等问题，列出不等式组保证车辆通过垄单元时不发生倾斜。

The polyvinyl chloride static and dynamic experiments of the heat stability by three novel low-lead, non-lead and low-tin, and non-lead and non-tin thermal stabilizers remixed respectively with phosphite ester, epoxidized soybean oil,β-diketone, pentaerythritol and houghite were reviewed.

通过新型低铅、无铅低锡和无铅无锡热稳定剂分别与亚磷酸酯、环氧大豆油、β-二酮、季戊四醇和水滑石进行复配，进行了聚氯乙烯的静态和动态热稳定性实验。

However, as well known, during traditional fire metallurgy of lead and production of lead/acid battery, there are emissions of lead vapor, sulfur dioxide and leady dust, which is harmful to the health of operators and brings about atmosphere pollution.

因此，应该研究和实现铅酸蓄电池的清洁生产。

The hydrogen precipitation of different metals, platinum, lead, nickel, iron and titanium, were discussed in different pH value and current density. By using Cyclic Voltammetry to study the reduction reaction, copper, titanium, lead, Ti/PbO2 and Ti/MnO2 as cathode respectively, it is proved that sodium metaborate can be electrochemically reduced to sodium borohydride. The kinetic parameters and fractal dimension of these electrode, graphite, lead iron Ti/PbO2 and Ti/MnOa etc, will be researched.

采用循环伏安法，分别以铜、钛、铅、钛、Ti／PbO_2和Ti／MnO_2作为阴极，对该反应进行实验研究，证实了偏硼酸钠电化学还原制各硼氢化钠的可能性；分别对石墨、铅、铁、Ti／PbO_2和Ti／MnO_2等电极在本实验体系中的电极动力学参数(a，b，i_0)及分形维数进行了讨论，认为Ti／PbO_2为该体系中的最佳电极材太原理工大学硕士研究生学位论文料。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。