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- I am going to rub up the chromium on the car. 我准备把汽车上的镀铬部件擦亮。
- 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 forms about 78% of the earth's atmosphere. 氮约占地球大气的百分之七十八。
- chromium nitrogen 氮化铬
- To tan or dye with a chromium compound. 用铬的化合物制革或染色
- Something plated with a chromium alloy. 镀铬物用铬合金镀的东西
- Containing two chromium atoms per molecule. 每个分子中含有两个铬原子的
- Will you sunder nitrogen from air? 你能从空气中把氮气分离出来吗?
- What about the chromium compound? 铬化物呢?
- I am going to rub upthe chromium on the car. 我准备把汽车上的镀铬部件擦亮。
- Nitrogen is the most commonly used gas. 氮气是最常用的气体。
- Sample gas tubes are flushed with nitrogen. 采气管得用氮气吹扫。
- The trimmings on the car are made of chromium. 车上的装饰品是用铬合金做的。
- The main reservoir of nitrogen is the atmosphere. 氮的主要蓄存库是大气层。
- Left floor lamp is plating chromium. 左边的落地灯是镀铬的。
- What is the percentage of nitrogen in air? 空气中所含的氮的比例是多少?
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- Fast neutrons are also captured by nitrogen. 快中子也可以被氮吸收。
