基本解释四环素同根派生 英汉例句compound tetracyline and prednisone acetate pellicles 复方四环素泼尼松膜Keywords TiO 2 dope;metal ions;complex particle;tetracyline;photocatalyst; 2复合微粒;掺杂;金属离子;四环素;光催化剂;