It can produce air-laid paper napkin pad, fluffy N. W. fabric napkin pad and three pieces style napkin pad. (As per request, it can be added to produce cotton core napkin pad.)
可生产无尘纸护垫，蓬松无纺布护垫，三片式护垫(根据要求可增加生产棉芯护垫)。
2
The letters N, S, E and W stand for north, south, east and west.
字母N、S、E和W分别代表北、南、东和西。
3
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。