si 7造句

Serena beat Big Sis 7-5, 6-3 Saturday in Paris; Venus topped Little Sis in September in New York.
Quite recently, the aromaticity of planar rings occurring in the Zintl phase Li 12 Si 7 was experimentally evinced by Li solid-state NMR . Metal aromaticity is believed to exist in certain clusters of aluminium, for example.
It's difficult to see si 7 in a sentence. 用si 7造句挺难的