The product at the front is exhibiting a lack of growth compared with all the others. This was identified at the time as being the lack of nitrogen because a ‘wrong’ source had been used.
与其它相对，最前面的长得最矮小，这时候的它被认定是由于使用“错误肥料”而造成缺氮的表现。
Although used more commonly in the gaseous state, nitrogen is commonly stored and transported as a liquid, affording a more cost-effective way of providing product supply.
尽管通常作为气体使用，氮一般以液态存储和运输，这样产品供应成本更低。
The final reduction product of nitrate nitrogen is ammonia nitrogen.
硝酸盐氮的最终还原产物为氨氮。
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