The study on secondary isochron of anomalous lead is a very important problem in the commonlead isotope geology.
异常铅二次等时线是普通铅同位素地质学研究中非常重要的一个课题。
2
CE. In Japan, while tubular beads are the most commonlead-barium glass artefacts, other objects, including bi discs, eye-beads and comma-shaped beads, also exist.
If electromagnetic pulse valve is not always magnetized, it must be checked if the connection outside of the terminal of commonlead of the valve is correct and reliable.