- 严密封锁 yánmìfēngsuǒ tight blockadeto seal off strictly; to impose a rigorous blockade; a strict blockade
- 密封胶 mìfēngjiāo sealantsealant; sealing glue
- 密封舱 mìfēngcāng sealed compartmentan airtight cabin or sealed compartment
- 密封辐射源 mìfēngfúshèyuán sealed radiation sourceradioactive material that is permanently sealed in a capsule or bonded in a solid form to prevent leakage
