barium iron钡离子bariumn.[化]钡barium chromate spectrophotometry硫酸钡分光光度法barium compulsory enema-syringe钡剂灌肠注射器barium tungsten dispenser cathode钡钨阴极barium-aluminum-silicon alloy硅铝钡合金barium neodymium titanate ceramics钛酸钕钡陶瓷barium and strontium sulfate scale硫酸钡锶垢barium lanthanum titanate ceramics钛酸钡镧陶瓷barium ferrite magnetic thin films钡铁氧体磁性薄膜barium strontium titanate ceramics钛酸锶钡陶瓷barium ytterbium fluoride crystals氟化钇钡晶体