提出了一种基于高精度性能模型的轴流通风机喘振故障预报方法，以实现动(静)叶调节轴流通风机喘振故障的预报。
Forcasting method of surge trouble based on high_accuracy fan performance model is put forward in order to realize surge trouble forecasting of axial fan adjusted with rotary and stationary vanes.
临床主要表现为运动性呼吸困难，动则气短、干咳、喘憋。
The clinical performance for the movement of difficulty in breathing, dynamic, shortness of breath, dry cough, Asthmatic.
临床主要表现为运动性呼吸困难，动则气短、干咳、喘憋。
The clinical performance for the movement of difficulty in breathing, dynamic, shortness of breath, dry cough, Asthmatic.
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