Breakdown, Disassembly, Dismantling, Decomposition
Noun, する verb, and の adjective
ぶんかい
電気分解の分解効率を向上させることはできる、お父さん？
Can you improve the decomposition efficiency of electrolysis, dad?
Take all the separate parts. Now untie them, unraveling the connections between the two parts. In this way we can do our analysis and breakdown.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.