短語(yǔ)詞組短語(yǔ)reserve shutdown availability time 備用停堆可利用時(shí)間time availability 時(shí)間可用度;時(shí)間利用率;時(shí)間可用性time availability of system 系統(tǒng)時(shí)間可用度finite time availability 有限時(shí)間可用性net drilling time availability 純鑽時(shí)間利用率 返回 availability time