He cannot understand a general argument, he always asks nitpicking little questions.

A two years study indicated that nitrate reductase activity ( NRA ) in vivo sharply decreased after harvest.

两年的试验结果表明,深色晾烟采收晾制后,体内硝酸还原 酶 活性剧烈下降.

Silver nitrate is a salt.

硝酸银是一种盐类化合物.

Under favorable conditions the ammonium ion is converted to nitrate.

在适宜条件下,铵离子转化为硝酸盐离子.

potassium nitrate

硝酸钾

The contents of zinc nitrate and zinc dihydrogen phosphate thus could be obtained.

按理论方法分别求得磷酸、磷酸二氢锌、硝酸锌的含量.

High levels of nitrate occur in eastern England because of the heavy use of fertilizers.

英格兰东部因大量使用化肥导致土壤硝酸盐浓度过高。

We need to cut nitrate levels in water.

我们需要降低水中的硝酸盐含量。

Self sensitization theory of expanded ammonium nitrate AN is the key point of the present innovation.

膨化硝酸铵自敏化理论是膨化技术发明的核心,它是基于热点理论把微气泡植入硝酸铵炸药中.

This nitrate opalesces under certain conditions.

这种硝酸盐在特定条件下会发出乳白色光.

high levels of nitrates in drinking water

饮用水中的大量硝酸盐

Then the organic liquid phase is a saturated solution of acid in the nitrated substance.

有机的液相就是酸在被消化物中的饱和溶液.

Nitrates are most commonly used medicines to treat angina.

治疗心绞痛最常用的药物就是硝酸盐.

Nitrates are used as preservatives in food manufacture.

硝酸盐在食品加工业中被用作防腐剂。

The soil is enriched with nitrates.

土壤里施了硝酸盐肥料.

Our water supply is becoming polluted with nitrates.

我们的水源正受到硝酸盐的污染.

When this new type of cover turns into waste , it forms nitrates.

手机罩降解时生成硝酸盐.

permissible levels of nitrates in water

水中硝酸盐含量的容许度

More expensive nitrating agents may be used.

还可应用较贵的硝化剂.

The plants keep the nitration nitrogen in their roots.

植物用根部将氮保存起来.

Any crops sharing the same space can get the nitration nitrogen as the roots deep composedecompose.

在同一空间生长的作物可以在根部腐化时获得氮.