secondadj.第二的；次等的；再一个的num.第二n.片刻；秒adv.第二；其次v.支持；赞成；附和；调派second handn.中间人；助手；旧货n.秒针

1. The existing auxiliary wind adjustment has a nonideal quick opening characteristic and intense vortex.This paper offered a new design of the controlling valve.
   对锅炉配风二次风调节器件进行研究，现有的二次风调节风门具有极不理想的快开特性，另外风门涡流强烈。