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据不完全统计,在我国三十几十炼油厂现有的生产装置中,采用的气功仪表总计有几万台,气动仪表与电动仪表使用的比例为2:1,也就是说使用气动仪表的生产装置约占整个生产装置总数的三分之二。在计算
According to incomplete statistics, there are tens of thousands of sets of qigong meters used in the existing production plants of thirty dozens of oil refineries in our country. The ratio of pneumatic meters to electric meters is 2: 1, which means that the use of pneumatic instruments Production facilities account for about two-thirds of the total production facility. In calculation