Where does this definition of AT system clock come from?
This entry for AT system clock is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Is AT system clock a noun, verb, or something else?
In this entry, AT system clock is tagged as 2n..
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.