硝化作用是废水生物脱氮中的关键.Nitrification is the key to biological wastewater nitrogen removal.活性炭基催化剂是低温烟气脱氮的优良催化剂.Activated carbon - supported catalysts are excellent catalysts for denitrification of flue gas temperature.厌氧氨氧化是一种全...
This photo focused on vendors outside the Potala Palace in Lhasa , Tibet.这张照片的主题是布达拉宫外的小贩们.What was the course of building the Potala Palace in history?历史上修建布达拉宫的过程是怎样的?What parts does the Potala Palace mainly contain?布达...
The original , half - formed idea in the mind of Keycase Milne had taken shape.奇开匙·米尔恩脑子里那个早先不成熟的主意终于形成了.A NEW SPECIES OF SUCKING LOUSE FROM GRICRTULUS LONGICAUDATUS MILNE - EDWARDS ( ANOPLURA: POLYPLACIDAE )青海长尾仓鼠吸虱一新种 ...