单词	事后维修
释义	事后维修corrective maintenance
随便看	hierarchical structure hierarchical structured query hierarchical structure production control hierarchical structure support hierarchical structure system hierarchical subdivision hierarchical system hierarchical system of cities hierarchical theory of central places hierarchical theory of needs hierarchical topology hierarchical tree hierarchical tree structure hierarchical tree system hierarchical triple hierarchical wordline interleave hierarchic classification hierarchic diffusion hierarchic direct access method hierarchic direct organization hierarchic escalation hierarchic indexed direct access method hierarchic indexed sequential access method hierarchic indexed sequential access method，hisam hierarchic sequence