备用装置

【计】 reserve arrangement; stand-by equipment; stand-by unit
【化】 emergency installation; emergency unit; spare plant

1.emergencyset  2.emergencyinstallation  3.reserveplant  

备用的英语翻译：

【计】 preemergency; stand-by; stand-by application
【经】 stand by

装置的英语翻译：

device; apparatus; fitting; installation; setting; unit
【计】 blaster; U
【化】 equipment; set; set up; setting
【医】 apparatus; device; fitting; installation; mounting; unit
【经】 equipment; installation