low-hazard occupancy

... low hazard 低火险<指建筑物等可燃性低 low-hazard occupancy 低火险用房<一至三房的住宅 LT ratio 转向比<转向机构的传 …

... low-hazard content 低火险屋内物品 low-hazard occupancy 低火险用房一至三房的住宅 low-heat value gas 低热值煤气 ...