It is urgent to substitute R134a for R12 in air-conditional equipment for military shelter because of the ban on using R12 for refrigerant.
由于制冷剂R12禁用期限的日益临近，对其进行替代已是迫在眉睫的问题。
It is urgent to substitute R134a for R12 in air-conditional equipment for military shelter because of the ban on using R12 for refrigerant.
由于制冷剂R12禁用期限的日益临近，对其进行替代已是迫在眉睫的问题。
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