释义长效避孕药物节育环用硅橡胶制成内含避孕药物置宫腔后药物慢性泄放
The long-acting contraceptive drug, the intrauterine device (IUD), is made of silicone rubber and contains the contraceptive drug. After being placed in the uterine cavity, the drug is chronically released
以上为机器翻译结果，长、整句建议使用 人工翻译 。