雅各布森得出的结论是基于对钐-147衰变成钕-143所作的分析。Jacobsen based his conclusion on an analysis of the decay of samarium-147 into neodymium-143.与氦 - 4不同之处是, 氦-3不能由放射性衰变产生.Unlike helium - 4, it cannot be produced by radioactive decay.将探测到来自...
Electron microscopy has revolutionized the study of crystal imperfections.电子显微学已经革新了对晶体不完整性的研究.These features are examined by optical microscopy, scanning electron microscopy, and transmission electron microscopy.这些图形可以用...