步進馬達

stepper motor

surname Bu

a step / a pace / walk / march / stages in a process / situation

surname Ma / abbr. for Malaysia 馬來西亞|马来西亚[Ma3 lai2 xi1 ya4]

horse / CL:匹[pi3] / horse or cavalry piece in Chinese chess / knight in Western chess

surname Da

to attain / to reach / to amount to / to communicate / eminent

to go forward / to advance / to go in / to enter / to put in / to submit / to take in / to admit / (math.) base of a number system / classifier for sections in a building or residential compound

motor (loanword)