Answer: The definition of the standard state is:the air state when the air suction pressure is 0.1MPa and the temperature is 15.6℃(the domestic industry definition is ).
Under the standard state, the air density is 1.185kg/m³(the exhaust volume of the air compressor,the processing capacity of the post-processing equipment such as the dryer and the filter are all marked with the flow rate under the standard state of air, and the unit is written as Nm³/min).