Short for 理学博士.

academic degree

physics (as an area of study)

professor / instruction, teaching

to instruct, to teach

to work at a job, to labour / to work properly, to operate, to function; to carry out one's function, to be effective, to come into play / to perpetrate or commit a crime

Alternative spelling of 只働き

Alternative spelling of 只働き

to hold, to carry something / to have, to possess / to hold up, to maintain

holding, possession / wear, durability