simple.
copy all in the timeline
make a new bin,
paste (dont drag & drop: FCP may create new master clips which is not what you want)
now just batch export the bin.
in the batch export settings remember to check “use in to out”
the resulting files will have the CLIP TC, not the Sequnce TC,
is that an issue?
OK< idealise you might have more complex sections, not just simple liked clips.
so, do this:
due your sequence in the browser,
put it into a new bin
in the new sequence, go thou marking in/outs around your sets,
option a to select in-to-out
option c to nest
do this 75 times and you have each seg as a nested sequence ready for batch export.
finally, a third method:
export your sequence, export as non-self contained if you are in a hurry (i always put (REF in the export name if i do this)
bring it back into FCP, lay it up in your timeline on top of the edited clips,
go through and put a marker where you want each new seg to start
copy the clip into a new bin,
toggle the triangle to reveal markers,
select all markers Apple U to make subclips.
if you have undesired spaced between the segs, add a marker at the head of the seg, and then extendd it to the end.
good things about the nest method is you get to re-name the nest to the seg name as you go.
nick