保角

(math.) angle-preserving / conformal

Bulgaria / Bulgarian / abbr. for 保加利亞|保加利亚[Bao3 jia1 li4 ya4]

to defend; to protect; to keep / to guarantee; to ensure / civil administration unit in the baojia 保甲[bao3 jia3] system (old)

surname Jue

angle / corner / horn / horn-shaped / unit of money equal to 0.1 yuan, or 10 cents (a dime) / CL:個|个[ge4]

role (theater) / to compete / ancient three legged wine vessel / third note of pentatonic scale

(math.) distance-preserving correspondence / conformal map