secondary air duct meaning in Chinese

二次风道

Increasing original resistan coefficient of the secondary air duct can improve the adjusting performance of air damper , and inhibit pulsation of the flow rate
增加二次风道的原始阻力系数，可以使风门的调节特性得到改善并抑制流量脉动。
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
摘要锅炉二次风道为有内置阻力件的一组并联大口径短通道，其阻力系数严重偏小而且风门涡流强烈，从而造成二次风强烈脉动。
The straight section of secondary air duct for boiler of 600 mw supercritical unit manufactured by dongfang boiler factory is shorter , at the time the measurement of air flow is being carried out by adopting velocity - equalizing tube flowmeter , the required precision can ' t be reached
摘要东方锅炉厂制造的600mw超临界机组锅炉二次风道的直管段较短，采用均速管流量计进行风量测量时，达不道精度要求。