質量保障

quality assurance (QA)

character / nature / quality / plain / to pawn / pledge / hostage / to question / Taiwan pr. [zhi2]

quality / (physics) mass / CL:個|个[ge4]

to measure

capacity / quantity / amount / to estimate / abbr. for 量詞|量词[liang4 ci2], classifier (in Chinese grammar) / measure word

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)

to ensure / to guarantee / to safeguard

to block / to hinder / to obstruct