Above all, they will have to discover how much nitrogen it possesses.
最重要的是，他们必须搞清楚这里面含有多少氮。
A third is certain basic chemicals such as carbon, oxygen and nitrogen.
第三种是某些基本的化学物质，如碳、氧和氮。
Well, we know nitrogen has what?
对于氮气我们知道什么？
The atmosphere is mostly nitrogen.
大气中也主要是氮气。
液态氮冰淇淋。
Oxygen and nitrogen are gases.
氧和氮都是气体。
拿一点氮气。
Air contains oxygen and nitrogen.
空气含有氧和氮。
Air consists chiefly of nitrogen.
空气主要由氮气组成。
而氮呢？
Nitrogen is not miscible with oil.
氮气与油不混相。
试一下氮气。
空气中大部分是氮。
What about between the carbon and nitrogen?
那么碳和氮之间呢？
Which element is shown here? Yeah, nitrogen.
这显示的是哪个元素？对，是氮。
Nitrogen is an essential food for plants.
氮是植物一种必不可少的养分。
What do you see here? This is now for nitrogen.
你能看到什么，这是氮的。
What is the percentage of nitrogen in air?
空气中所含的氮的比例是多少？
Remember, nitrogen has no warning properties!
记住，氮没有警告性特征！
The main reservoir of nitrogen is the atmosphere .
氮的主要蓄存库是大气层。
A second small nitrogen line leak is also being repaired.
第二次小的氮管线泄露也被修理完毕。
The atmosphere consists of more than 70% of nitrogen.
大气中含有70%以上的氮气。
Let's look at nitrogen to see if it applies there as well.
让我们看看此原理是否适用氮气。
They found that the fungus was getting nitrogen from the air.
他们发现真菌从空气中获得氮元素。
Magnesium is able to burn in carbon dioxide and nitrogen.
镁是可以在二氧化碳和氮气中燃烧的。
So what we see is that the formal charge on the nitrogen is 0.
因此我们看到氮的形式电荷是零。
And, although you think that nitrogen, I mean, it's an inert gas.
尽管你认为那是氮气，我的意思是，它是一种惰性气体。
Ammonia is the feed stock to make nitrogen-based fertilizers.
氨是氮基，化肥的原料。
The Atractylone in sample solution was kept stable in nitrogen.
样品溶液中的苍术酮经充氮气后保持稳定。
The Atractylone in sample solution was kept stable in nitrogen.
样品溶液中的苍术酮经充氮气后保持稳定。
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