The medium is gas, liquid gas or liquid which maximum operation temperature is more than or equal to standard boiling point.
介质为燃气、液态燃气或液体，最高工作压力大于或等于介质的标准沸点。
The medium is gas, liquid gas or liquid which maximum operation temperature is more than or equal to standard boiling point.
介质为燃气、液态燃气或液体，最高工作压力大于或等于介质的标准沸点。
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