常见例句雙語例句AIM: To study the value of oral ferric ammonium citrate(FAC) solution as a negative gastrointestinal contrast agent in MR urography(MRU).目的：研究枸櫞酸鉄銨作爲胃腸道隂性對比劑對改善磁共振尿路成像（MRU）質量的價值。 返回 oral urography