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1)  lead foam
泡沫铅
1.
Status quo of preparation,performance and application study of lead foam;
泡沫铅的制备、性能及应用研究的现状
2.
Influence of lead foam grid on charge acceptance of VRLA battery;
泡沫铅板栅对VRLA电池充电接受能力的影响
3.
Research progress in lead foam grid materials for lead acid batteries;
铅酸电池泡沫铅板栅材料的研究进展
2)  foamed lead
泡沫铅
1.
The foamed lead is a functional material with wide applications.
对渗流铸造法制备泡沫铅及其关键———预制块的制备过程进行了实验研究。
2.
foamed lead is a functional material with wide applications.
本文对渗流铸造法制备泡沫铅及其关键——预制块的制备过程进行了实验研究。
3)  lead foam negative electrode
泡沫铅负极
1.
The electrochemical behaviors of a lead foam negative electrode in sulfuric acid were studied by means of chronoamperometry, cyclic voltammetry(CV),electrochemical impedance spectrometry(EIS)and charge-discharge tests.
采用计时电流法、循环伏安曲线、电化学阻抗谱和充放电实验研究了泡沫铅负极的电化学行为,结果表明:泡沫铅负极的真实表面积比铅箔负极的大,因此泡沫铅负极具有较低的过电势,并且不论是在怎样的放电状态下,泡沫铅负极的电化学反应电阻较小;与铅箔负极相比,在10、5和2小时率放电状态下,泡沫铅负极的质量比容量分别增加25。
4)  foam [英][fəʊm]  [美][fom]
泡沫
1.
Preparation and Property of Polyimide Foams;
聚酰亚胺泡沫的制备与性能
2.
Present State of Art of Polymethacrylimide(PMI) Foam Research;
聚甲基丙烯酰亚胺(PMI)泡沫研制现状
3.
Preparation and structural characterization of polymethacrylimide foams;
聚甲基丙烯酰亚胺(PMI)泡沫制备及结构表征
5)  foaming [英][fəum]  [美][fom]
泡沫
1.
Study of foaming and thickening performance MeGA-12 shampoo system;
N-十二烷基葡糖酰甲胺香波体系的泡沫及增稠性能
2.
Control Strategeis of Activated Sludge Bulking and Foaming and Exploitation of Database System;
活性污泥膨胀和泡沫的控制研究及其数据库开发
3.
5%) is used as foaming agent.
8g/cm3的泡沫修井液体系。
6)  froth [英][frɔθ]  [美][frɔθ]
泡沫
1.
The gray run length and its statistical texture features of coal flotation froth image;
煤泥浮选泡沫图像灰度行程及其统计纹理特征
2.
Chengdu Real Estate Market Froth Research;
成都市房地产市场泡沫研究
3.
Experiment was conducted on laboratory-scale flotation column to deal with characteristic of a grey scale histogram of coal slime flotation froth image.
针对煤泥浮选泡沫图像灰度直方图特征问题,进行了实验室浮选柱试验,采集了50组煤泥浮选泡沫图像,分析了泡沫图像及其直方图的类别及形态,提取了浮选泡沫图像直方图统计纹理特征参数,研究了泡沫直方图统计纹理特征参数随浮选时间的变化关系。
补充资料:铅-铅测年
分子式:
CAS号:

性质:238U和235U两个母体铀同位素的特性实质相同,所产生的放射性成因206,207Pb的方程可合并为(207Pb/206Pb)=[(235U/238U)](t-1)。235U/238U现在的比值是1/137.8,利用非放射性成因‘稳定’204Pb作为参考同位素,作(207Pb/204Pb)与(206Pb/204Pb)的Pb-Pb等时线,应用方程计算年龄,式中(207Pb/204Pb)和(206Pb/204Pb)0是初始比值。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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