Right or wrong?

[ChoTokusen]

Is the following expression correct or no?

[Beeesneees]

It might be - it's impossible to know without more context.
This is just a fragment from the middle of a sentence.
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Cheers m' dears!

[ChoTokusen]

Dear Mrs. Beeesneees
The whole sentence is as follows:

[Beeesneees]

More context would be useful as we are obviously talking about a specialised sentence here.
However, it looks as if it is correct if:
T is am algebraic symbol or similar (I'd guess T - time, because of the mention of duration)
'Net' is a noun, properly used here.
The net functions for a certain period.
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Cheers m' dears!