Air is mostly nitrogen.空气主要是氮气。

Plants need fixed nitrogen.植物需要固定氮。

Each tank holds compressed nitrogen.每个气瓶装压缩氮气。

Protein is rich in nitrogen.蛋白质富含氮。

Farmers spread nitrate on the fields.农民往田里撒硝酸盐。

Each nitrate dissolves in water.每种硝酸盐都溶于水。

Tests measure nitrate in the river.检测测量河水中的硝酸盐。

Cured meats often contain nitrate.腌肉常含硝酸盐。

The lab tested for nitrite.实验室检测亚硝酸盐。

Each nitrite gives cured meat its pink.亚硝酸盐让腌肉呈粉红色。

High nitrite levels worry the doctors.高亚硝酸盐水平令医生担忧。

Bacteria convert nitrate to nitrite.细菌把硝酸盐转化为亚硝酸盐。

The bottle holds strong nitric acid.这瓶里装着浓硝酸。

Each nitric oxide molecule bonds easily.每个一氧化氮分子都易结合。

The chemist diluted the nitric solution.化学家稀释硝酸溶液。

Nitric fumes rose from the dish.硝酸烟雾从皿中升起。

Drivers breathe nitrous oxide.赛车手吸入一氧化二氮。

Each nitrous tank boosts power.每个一氧化二氮气罐都提升动力。

The lab prepared nitrous acid.实验室制备亚硝酸。

Nitrous oxide makes the balloon float.一氧化二氮让气球浮起。

The chemist synthesized a nitrile.化学家合成了一种腈。

Each nitrile group ends in carbon and nitrogen.每个腈基以碳和氮收尾。

The factory handles toxic nitrile.工厂处理有毒腈。

Nitrile gloves protect the hands.腈手套保护双手。

Bacteria nitrify the ammonia.细菌使氨硝化。

Each warm season helps nitrify soil.每个温暖季节都帮助土壤硝化。

Farmers wait to nitrify the compost.农民等待堆肥硝化。

The process can nitrify waste nitrogen.这一过程可使废氮硝化。

Wet soils denitrify excess nitrogen.潮湿土壤脱去过剩氮。

Each treatment plant tries to denitrify.每座处理厂都努力脱氮。

Bacteria denitrify the runoff.细菌使径流脱氮。

Farmers denitrify fields before rain.农民在雨前给田脱氮。

Black powder needs niter.黑火药需要硝石。

Each niter crystal sparkled.每块硝石晶体都闪光。

Old gunpowder mills refined niter.旧火药磨坊提纯硝石。

Caves deposit layers of niter.洞穴沉积硝石层。

Nitrocellulose once made film.硝化纤维曾用来造胶片。

Each nitrocellulose sheet is flammable.每张硝化纤维纸都易燃。

Old records used nitrocellulose tape.旧唱片用硝化纤维胶带。

The lab dried the nitrocellulose film.实验室晾干硝化纤维膜。

Doctors prescribe nitroglycerin for chest pain.医生为胸痛开硝酸甘油。

Each drop of nitroglycerin is powerful.每滴硝酸甘油都很猛。

Nitroglycerin also makes dynamite.硝酸甘油也用来做炸药。

He carried a nitroglycerin tablet.他带着一片硝酸甘油。

British texts spell it nitroglycerine.英国文本拼作 nitroglycerine。

Each nitroglycerine capsule relieves pain.每粒硝酸甘油胶囊都缓解疼痛。

Old chemists feared raw nitroglycerine.旧化学家惧怕未经处理的硝酸甘油。

The mine used nitroglycerine charges.矿上用硝酸甘油炸药包。

Nitrobenzene smells like almonds.硝基苯闻起来像杏仁。

Each nitrobenzene batch is toxic.每批硝基苯都有毒。

The chemist reduced nitrobenzene.化学家还原硝基苯。

Factories use nitrobenzene in dyes.工厂在染料中使用硝基苯。

Nitramine powers some rockets.硝胺为某些火箭提供动力。

Each nitramine compound is unstable.每种硝胺化合物都不稳定。

Chemists handle pure nitramine carefully.化学家小心处理纯硝胺。

The military studied a new nitramine.军方研究一种新型硝胺。

Trinitrotoluene is better known as TNT.三硝基甲苯更广为人知的名字是 TNT。

Each block of trinitrotoluene is stable.每块三硝基甲苯都很稳定。

Demolition crews use trinitrotoluene.爆破队使用三硝基甲苯。

The formula names the trinitrotoluene.这个化学式命名三硝基甲苯。

The new rule will be nitrogenous for everyone in the group.新规则对组里每个人都将是含氮的。

They considered the plan nitrogenous after a long discussion.经过长时间讨论，他们认为该计划是含氮的。

The manager gave a nitrogenous answer at the meeting.经理在会上给出了一个含氮的的答复。

Every solution must be nitrogenous before it is approved.每个方案在获批前都必须是含氮的的。