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To steady flow test bench, pressure (350 mmH2O) measure on airway core box

In the stationary stream test platform, (350 mmH2O) carries on the survey with the equi-pressure law to the gas channel core box

test stand at steady flow pressure, such as law, use 2 (350 mmH O) of gas road core box measuring

To steady flow test bench, pressure (350 mmH2O) measure on airway core box