x
uploads/periodic law.jpg

periodic law 【化學】周期律。

periodic sentence

This russian chemist is famous for his formulation of the periodic law and the publishment of the first periodic table , a classification of the elements in 1869 這位俄國化學家于1869年建立了元素中期分類法,并就此發表了世界上第一份元素周期表。

The four principles of forming atomic nucleus sub - cluster structure and isosceles triangle periodic law of nuclein 形成原子核群子結構的四項原理及其等腰三角形核素周期律

The octet periodic law of natural numbers and the four theorems of diophantus 自然數八度周期律暨丟番圖四定理