The effects of nozzle structure, fuel gas injection velocity and excess air coefficient on NOx emission in high temperature air combustion were investigated.

通过两种结构烧嘴的热态燃烧试验对比，研究了烧嘴结构、燃气射流速度、过量空气系数对高温空气燃烧过程氮氧化物排放的影响特性。

youdao

Experiment results show that wake region behind wind tower can cause velocity deficit, turbulence excess and downwash phenomenon.

试验结果表明排气塔后部的尾流区能引起速度亏损、湍流增强和下冼现象。

youdao

The variation of combustion velocity, fired gas temperature and flame propagation speed, when the press, excess air ratio and ignition timing changed, was calculated by this quasi-dimensional model.

此模型能根据实测的燃烧压力曲线计算出层流燃烧速度、已燃气火焰温度及火焰传播速度等参数随压力、当量比、发动机转速、点火提前角的变化规律。

youdao

The evidence of past recessions is that economic growth doesn't resume at any great velocity until unviable and inefficient businesses are put of their misery and excess capacity in various industries is eliminated.

BBC: Is there good news in HMV's collapse?

Those higher rates would encourage banks to maintain their excess reserves at the Fed, thereby slowing the increase in velocity associated with a higher Fed Funds rate.

FORBES: An "All-In" Bet By Fed Chairman Ben Bernanke