1) lead-door
铅门
1.
This paper introduces a method of turning a handy lead-door into electronic door with the application of several new techniques including two-step slowing down,chains transmission hanged railway and pulley orientation,it has remarkable advantages such as simplicity in structure ,convenience in operation,stability in application and low cost.
介绍了一种将手动操作的铅门研制成电动运行的方法。
2) wire door ,chain link door
铅丝网门
3) Guanmenshan Pb-Zn deposit
关门山铅锌矿床
1.
The research area is about 2000 km2 including Guanmenshan Pb-Zn deposit and its surrounding areas.
研究区位于关门山铅锌矿床及外围约2000km~2范围内,依据综合信息成矿预测的基本理论,采用图像处理方法,进行遥感信息及地球物理信息对地质构造识别的增强处理。
4) Guanmenshan Pb-Zn ore deposit
关门山铅锌矿床氧化带
5) Beichagoumen Ph-Zn deposit
北岔沟门铅锌矿床
1.
The Re-Os isotopic age of molybdenite from Beichagoumen Ph-Zn deposit in the North China Platform;
冀北北岔沟门铅锌矿床中辉钼矿的铼-锇同位素年龄
6) Pb
铅
1.
The Research of Pb′s Various Forms in the Latosol by the Effect of Earthworm;
蚯蚓影响下铅在砖红壤中的形态变化研究
2.
DETERMINATION OF TRACE Cu,Pb,Zn,Cd IN WATER BY FAAS;
火焰原子吸收分光光度法直接测定水中微量铜、铅、锌、镉
3.
Effects of Different Potassium Fertilizers on the Phytoavailability of Pb in Soil and its Mechanisms;
不同钾肥对土壤铅植物有效性的影响及其机制
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。
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。
参考词条