大气氮 atmospheric nitrogen
大气氮素固定 fixation of atmospheric nitrogen
大气氮固定 fixation of atmospheric nitrogen
氮气 [化学] Nitrogen
大气氮沉降 Atmospheric Nitrogen Deposition
大气氮公司 Atmospheric Nitrogen Corporation
大气氮含量 nitrogen concentration in atmosphere
氮气吹尘 nitrogen dusting
氮气容器 [化工] nitrogen gas container
气体氮化 gas nitriding
介绍了渗氮、超低温处理、气相沉积、等离子改性以及复合表面处理技术等在切削刀具中的应用现状和发展趋势。
The status and development trend of surface treatments, such as nitriding, vapor deposition, plasma modification and multiplex surface treatment technology used for cutting tools were described.
针对炼油厂含油废水的常规生化处理工艺对氨氮的降解效果较差，采用曝气生物滤池作为二级生化进行试验研究。
Aiming at the poor effect of amino nitrogen degradation in conventional refinery oil sewage treatment, the secondary biochemical test was carried with biological aeration filter pool.
水力停留时间(HRT)、操作温度和曝气比率对WSBR的脱氮效果影响明显。
HRT, temperature and aerobic time ratio have an obvious effect on the treatment by WSBR.
应用推荐