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- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- 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。
- nitrogen sulfide 硫化氮
- Nitrogen forms about 78% of the earth's atmosphere. 氮约占地球大气的百分之七十八。
- A bright red mercuric sulfide used as a pigment. 银朱，朱砂用作颜料的一种鲜红色的硫化汞
- These effects are antagonizeed by sodium sulfide. 这些效果被硫化钠中和了。
- Will you sunder nitrogen from air? 你能从空气中把氮气分离出来吗?
- Any of various natural metallic sulfide minerals, especially of iron. 硫化矿类一种自然金属硫化矿，尤指铁矿
- A sulfide compound containing at least two sulfur atoms per molecule. 多硫化物每个分子中至少含有两个硫原子的一种硫化物
- Calcium treatment changes the shape of sulfide. 采用钙处理改变了硫化物的形态;
- Nitrogen is the most commonly used gas. 氮气是最常用的气体。
- Red mercuric sulfide used as a pigment. 朱红色用作颜料的红色硫化汞
- Sample gas tubes are flushed with nitrogen. 采气管得用氮气吹扫。
- The removal rate of sulfide is high. 硫化物的去除率很高。
- 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?
- Fast neutrons are also captured by nitrogen. 快中子也可以被氮吸收。
- Nitrogen forms four-fifths of the atmosphere. 氮气占空气的五分之四。
- Nitrogen forms about four-fifths of the atmosphere. 氮约佔大气的五分之四。
