常見例句用作名詞 (n.)This is the large ring lactone class antibiotic.本品為大環(huán)內(nèi)酯類抗生素。Study on Extraction and Separation of Lactone for Coix Lachrymajobi L.薏苡內(nèi)酯的提取及分離純化條件的研究。 返回 lactone