how to understand the 45 degree exit and how to translate this term
This connector is the old style 45 degree exit that comes in a metal case and has proven to be problematic with noise and signal quality.
Answers · 1
The cable doesn't come out directly from the connector, but from one of the corners: a 45 degree exit. You can search for images which show this very clearly, using "connector" and "45 degree exit" as your search terms.