This is the 3084th most frequent Japanese word.
主力
"Main force" or "key strength."
In this sentence, "主力" is used to denote the main or core product of a lineup or portfolio, emphasizing its importance and central role.
主力の商品を展示会で紹介しました。
We introduced our main product at the exhibition.
Here, "主力" identifies an individual as a key or crucial member contributing significantly to the performance of a group, such as a team.
彼はチームの主力として活躍しています。
He is performing actively as the key player of the team.
In this context, "主力" refers to the primary focus or central theme of a topic or endeavor, highlighting its importance in the project.