指核反应堆、熔炉、焚化炉等的退役，已退役的核反应堆（或熔炉、焚化炉等）

1. decommissioning (of a nuclear reactor, furnace, incinerator etc.), decommissioned nuclear reactor (or furnace, incinerator, etc.)

noun or participle which takes the aux. verb suru noun (common) (futsuumeishi)