This is a complex situation which will tax even fairly sophisticated native-speaker writers. There are four techniques which can help you:
- Don't let phoney 'style' considerations prevent you from repeating terms.
- Employ uncontracted structural devices—repeated prepositions,
for instance, or frank either ... or constructions—to make
the 'shape' of your argument more evident.
- Employ the full range of punctuation as a structural device—use colons and semicolons, and don't try to get too much into one sentence.
- Outline your argument, so you are clear where you are going:
- 80% of 'fixings' are correct
- Most of the rest are not correct for one of two reasons
- Some are incorrect because lines are missing
- Others are incorrect because graph relations are distorted
- Distorted graph relations are caused by:
- The absence of small segments
- Mismatched parameters
Now all you need is a little tweaking.
The table shows that 80% of 'fixings' are correct. The rest are incorrect, mostly for one of two reasons: either lines are missing or graph relations are distorted. Distorted graph relations are caused by the absence of small segments, by mismatched parameters, or by undersegmentation.