Please help me inprove this sentence

[hanky]

In actual calculation, the way that the block A is
enlarged is not by doubling it, i.e., A'=A + A, but usually by
adding a single site to it, i.e., A' = A + 1.

Thanks.

[Tdol]

What do block and site refer to?

[hanky]

What do block and site refer to?

Here one can understand, for example, that 'site' representing an atom, a 'block' is a set of sites. I have defined 'block' in the previous paragraph (not shown here).

[BobK]

If you've defined your terms the equations make sense. (Incidentally, it's 'improve', and most modern technical writing avoids "i.e.".)

b

[hanky]

If you've defined your terms the equations make sense. (Incidentally, it's 'improve', and most modern technical writing avoids "i.e.".)

b

Sorry, this is a typo since N and M buttons are so close in my keyboard

You said that the sentence makes sense, but is this normal/good English? How do you rewrite the sentence without using 'i.e.'? I think it helps the sentence more clear.

Thanks.

[hanky]

I don't think the sentence is good enough to not necessarily being improved, so please help.