铅的

Pb to stress factor for the trial, the use of hydroponics method of a secret Mingshan 131, Mingshan 213 , Fuding three varieties of tea tree by the heavy metal treatment, the symptoms of victims of tea andthe absorption of lead andcumulative law.

以重金属铅为试验胁迫因子，采用水培方法研究了名山131、名山213、福鼎大白三个品种茶苗经铅处理后的受害症状以及茶树对铅的吸收与累积规律。

Iron in the body could antagonize the role of lead to reduce lead absorption, to reduce blood lead

铁在体内可拮抗铅的作用，减少铅的吸收，有利于降低血铅

On the base of theorial study,ore experiment is made and feasible grind granularity and medicament system and the flow of Galenite flotation firstly is ascertained.

在优先选铅浮选过程中，经一次粗选，一次扫选，两次精选，所得到铅精矿中铅的品位达66.04%，铅的回收率为87.31%，银的回收率为70.40%，在浮选锌时，一次粗选，两次扫选，两次精选，所得锌精矿中锌的品位58.26%，锌的回收率为82.13%，银的回收率为19.36%，取得了银的总回收率达89.76%较先进的指标。最后，对浮选药剂与方铅矿、闪锌矿和银矿物的作用机理进行了深入探讨与分析，认为本实验中所使用的抑制剂和活化剂不会对银矿物的回收产生不利影响。

The potentiometric titration is implemented with lead nitrate standard solution.

在乙醇体系中，用硝酸铅标准溶液进行电位滴定，用二阶微分法分别确定全磷和硫酸根耗用硝酸铅的总体积，以及全磷耗用硝酸铅的体积。

It is found that the concentration of nitric acid has great effect on reclaiming rate of lead in the processing of nitric acid leaching-lead deposition after investigating the preparation of tribasic lead sulphate from bismuth waste residue by ammonium hydrogen carbonate transformation method.

通过对铋冶炼浸渣采用碳酸氢铵转化法合成三碱式硫酸铅的工艺研究，得出在硝酸浸出—硫酸沉铅工艺过程中影响铅回收率的主要因素为硝酸质量浓度。

Determination of silver in lead ore by AAS;2. The ore is lead mine of partial oxidation,the lead ore consists chiefly of galena and cerusite.

所处理矿石为半氧化铅矿石，矿石中铅以方铅矿和白铅矿形式产出，铅的氧化物主要为白铅矿，分布率达39%。

When the concentration of lead was very high, the most of lead linked weekly with the cell wall of root and was easy to dissolve into acidic solution. But about 50μg Pb/g cell wall was very hardly desorbed, it might be entered into the cell wall. This phenomena showed that the complete desorption of lead will be very difficult.

铅浓度高的细胞壁，其相当大部分的铅与细胞壁的结合力并不大，因此在用强酸处理时，就比较容易地溶解下来，但是大概有50微克／克细胞壁的铅，它们的结合牢度大，或者深入到了细胞壁的组织中，因此很难解吸下来，这将会对铅的彻底去除带来困难。

The research used microwave power 600W,and S/L is 1/10, with the suitable microwave operation condition (nitric acid concentration 9.0 mole/L, digesting time 8 minute, and digesting temperature 140 ℃), by microwave digestion lead leaching rate is 94.11%, if it used microwave power 600W,and S/L is 1/10, with the best microwave operation condition (nitric acid concentration 0.8 mole/L, digesting time 6 minute, and digesting temperature 120 ℃), by the result of study, after Microwave Digestion Treatment, the TCLP leachate of lead in reaction ash might could be reduce to 4.83 mg/L from 7.10 mg/L, and the TCLP leachate could keep under the regulation control standards.

本研究以微波功率600W、固液比1/10，在最适微波条件下(硝酸浓度9.0M、消化时间8分钟、消化温度140℃)，铅的微波消化溶出率为94.11％。在微波功率600W、固液比1/10，以微波最佳条件(硝酸浓度0.8M、消化温度120℃、消化时间6分钟)，经微波消化处理后，其铅TCLP 溶出量由7.10 mg/L降为4.83 mg/L，已能符合法规管制标准值。在此最佳微波条件下，对於铅TCLP 削

The oxidation process of lead sulphate in the inner part of the grain, which is formed directly by anodizing lead, is much slower.

至于颗粒内部由铅直接生成的硫酸铅的氧化为二氧化铅就要缓慢得多。

The lead-less piezoelectric ceramic composition is prepared through sintering at relatively low temperature, say, 1190 deg.c or even lower, and has good piezoelectric characteristic, practical plane electromechanical coupling coefficient kp, high Curie point and no lead and lead compound contained.

本发明的制备工艺能在较低温度下，如1190℃或更低温度下烧结无铅压电陶瓷组合物，使制备的无铅压电陶瓷具有好的压电性、可实用的平面机电耦合系数kp和高的居里温度，制备工艺过程中不含铅或铅的化合物。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了