unplanned maintenance非: mistake; wrong; errors计划: plan; project; programme; de ...检查: check up; inspect; examine; ...计划检查委员会: planning and review committee计划检修: proposed repair; schedule repair下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:非计划检查，即可在微信中查询翻译
