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- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- trate nitrogen 硝态氮,硝酸盐氮
- Catalytic Mechanism of Nitrogen Reduction by Nitrogenase and its Chemical Modeling 固氮酶催化作用机理及其化学模拟
- Relationship Between Nitric Nitrogen Reduction in Leaf and Its Accumulation in Petiole of Spinach 菠菜叶片中硝态氮还原与叶柄中硝态氮累积的关系
- Nitrogen forms most of the Earth's air. 地球上空气的大部分成分是氮气。
- The lamp is full of gaseous nitrogen. 灯里充满了气体氮。
- The reduction of unemployment should be paramount. 降低失业率应是头等大事。
- Nitrogen forms about 78% of the earth's atmosphere. 氮约占地球大气的百分之七十八。
- The forthcoming talk hold out the hope of real arms reduction. 即将举行的会谈给实现真正的裁军带来了希望。
- nitrogen reduction 脱氮
- Queue forme at the ticket office when the news of the fare reduction get out. 票价下调的消息一传出,售票处前就排起了队。
- A reduction in pace, force, or intensity; a slowdown. 减慢,放松速度、力量或强度减弱; 放慢
- What reduction will you make on this article? 这个东西你要减价多少?
- Will you sunder nitrogen from air? 你能从空气中把氮气分离出来吗?
- There is no room for any reduction in price. 价格毫无再减的余地了。
- Nitrogen is the most commonly used gas. 氮气是最常用的气体。
- The talks resulted in reducing the number of missiles/missile reduction. 谈判结果削减了导弹数量。
- Sample gas tubes are flushed with nitrogen. 采气管得用氮气吹扫。
- The main reservoir of nitrogen is the atmosphere. 氮的主要蓄存库是大气层。
- What is the percentage of nitrogen in air? 空气中所含的氮的比例是多少?