Introduce to the collator group the method of moistening by ultrasonic pulverization plus moistening by buretting discontinuously into the trachea.

 
  • 結果:實(shí)驗組滿(mǎn)意率90%25,對照組滿(mǎn)意率30%25,實(shí)驗組明顯優(yōu)于對照組。
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