您要查找的是不是：
- 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 peroxide 二氧化氮,过氧化氮
- Nitrogen forms about 78% of the earth's atmosphere. 氮约占地球大气的百分之七十八。
- Immerse it in a solution of peroxide and water. 将其浸入过徉氧化氢及水的溶液中。
- To bleach(hair)with hydrogen peroxide. 用过氧化氢漂白（头发）
- Will you sunder nitrogen from air? 你能从空气中把氮气分离出来吗?
- To bleach(hair) with hydrogen peroxide. 用过氧化氢漂白（头发）
- Benzoyl peroxide(BPO) was used as initiator. 通过傅立叶红外光谱对接枝物进行定性表征;
- Purposes：Used for manufacturing hydrogen peroxide. 用途：作为双氧水生产载体。
- Nitrogen is the most commonly used gas. 氮气是最常用的气体。
- He used a solution of peroxide and water. 他使用过氧化氢和水组成的溶液。
- 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?
- 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。
- What is the content of the crude nitrogen. 污氮的含氧量是多少?
