baumn.射频阻抗匹配变压器BAabbr.(=bachelor of arts) 文学士abbr.(=batting average) 击球率abbr.(=Buenos Aires) 布宜诺斯艾利斯abbr.[国家域名]波黑（=Bosnia and Herzegovina）Baiyun Depression白云凹陷Ba-Ma mini pigs巴马小型猪BaoQuan reservoir宝泉水库Baoan waist knife保安腰刀baking start-up焙烧启动Bauchinger effect包申格效应Bauhinia blakeanan.红花羊蹄甲Bajiang catchment巴江流域baking enrichment焙烧富集BaoBaoLe granules宝宝乐颗粒