mechanical engineering department; mechanical engineering course
Refers to a department or course of study in mechanical engineering, typically at a technical high school, vocational school, or university.
彼は工業高校の機械科で学んでいる。
He is studying in the mechanical engineering department at a technical high school.
Compound of 機械 (きかい, 'machine') and 科 (か, 'department' or 'course').