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

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.

The advanced nitration technology and hydrogenation technology are discussed. The aniline production quantity is explained.

介绍了苯胺生产中先进的硝化技术、还原技术;阐述了国内外苯胺的生产情况.

Part III : High-efficient nitration reaction of N, N-dialkylanilines under mild and neutral conditions.

N, N - 二烷基苯胺在温和、中性条件下的高效硝化反应.

The nitration of pcymene may lead to dinitrotoluene.

硝化对位异丙基甲苯时会生成二硝基甲苯.

In the reaction of acetylation and nitration 1,2 ? dichloroethane was used as solvent.

在乙酰化、硝化反应中引入了1,2-二氯乙烷溶剂.

Complete nitration takes about 10 minutes at room temperature.

完全硝代需要大约10分钟在室温.

The nitration of this may lead to dinitrotoluene.

对此的硝化会生成二硝基甲苯.