I've been busy building the mini kossel 3d printer on and off for about a year now.
我一直忙于建设微型科塞尔3d打印机和关闭了大约一年了。
2
In their 1916 papers, both G. N. Lewis and W. Kossel pointed to the electron configurations of these elements as especially stable.
在1916年的论文中，G·N·刘易斯(G . N . Lewis)和W·科塞尔(w . Kossel)都指出，这些原子的电子构型非常稳定。
3
On the basis of the first ionization potentials of the gases, Kossel noted that xenon was most likely to have the capability of forming fluorides and oxides.