? ?: 2021-4-8
  ??????1  0.30MPa(t????o'0.14MPa)
  ?2?: 0.30MPa  ?3: 0.30MPa  ??: 0.29MPa  3?31?:0.29MPa
  2021?3??Y???D???  
?2a????????3?o??a??????????y'3|?o?'3|?oo?????
1???1NTU?15?T?T?1002????3?2????3??3?Y0.3
y??30.13?'5?T?T0?'?3??'?3?1.230.32
????30.15?'5?T?T0?'?3??'?3?0.770.60
????30.47?'5?T?T0?'?3??'?3?0.700.66
??30.18?'5?T?T0?'?3??'?3?1.570.70
???30.19?'5?T?T0?'?3??'?3?1.050.71