secondary air inlet 中文意思是什麼
secondary air inlet
解釋
第二股空氣進口-
The secondary air duct of boilers is a group of large diameter short ducts in parallel connection, having inlet air flow condition with inner positioned resistant pieces
摘要鍋爐二次風道為有內置阻力件的一組並聯大口徑短通道,其阻力系數嚴重偏小而且風門渦流強烈,從而造成二次風強烈脈動。 -
Nearly all engines are equipped with air cleaners, which help reduce the air inlet noise to a secondary sound source
一般發動機均裝有空氣濾清器,進氣噪聲即可有較大衰減,成為次要聲源。
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