氧气

When clean air particles of oxygen and nitrogen move through smoke detectors, the americium-241 ionizes them, which creates an electrical current.

当只含有氧气和氮气清洁的空气通过探测器时，镅241会产生一道电流，电离它们。

The results indicated that the lignified seed shell had a negative impact on water permeability of seeds,but it was not the main reason for seed dormancy.

结果表明：(1)美国桂花种子木质化种壳对种子的吸水透性有一定的阻碍作用，但不是引起种子休眠的主要原因；(2)美国桂花种子的胚没有休眠，离体胚在光照培养7 d开始萌动；(3)胚乳被严密包裹的机械作用使胚无法获得萌发所必需的水分和氧气，这可能是导致种子休眠的最主要的原因。

You've only limbered up your muscles and joints and enhanced the flow of blood through your body, providing an extra shot of oxygen to all your tissues.

你塑造了肌肉和关节，并且增强了身体里面血液的流动，给所有的组织提供了额外的氧气。

You\'ve just limbered up your muscles and joints and enhanced the flow of blood through your body, providing an extra shot of oxygen to all your tissues.

你塑造了肌肉和关节，并且增强了身体里面血液的流动，给所有的组织提供了额外的氧气。

The ministry said it suspected the plane's oxygen supply or pressurisation system may have malfunctioned.

军方说，可能是飞机上的氧气供应或者压力系统出了故障。

This maximizes the amount of oxygen in your blood.

这其中最大的氧气量在你的血液中。

The oxygen we breathe in mixes with our blood and can give us life.

我们吸入的氧气和血液混合可以维持我们的生命。

It is yellow of course; It is the most rudimentary to be blue and green, it is the color of common people's clothes.

这是一种存在于靛蓝草枝叶中的物质，经发酵后产生可溶性的白色溶液，将织物浸泡在这种溶液中后取出，在空气中氧气的氧化作用下生成不溶于水的青蓝色，它耐日晒水洗和加热。

The result shows that the recycling effluent upgrades significantly the removal for BOD_5,COD,SS,and NH~+_4-N,and BOD_5 removal rate meets the Monod equation;most part of NH~+_4-N is nitrified and the removal rate of NH~+_4-N is linear with the surface loading rate.Along with the nitrification,alk...

结果表明：循环出水显著提高了对BOD5、COD、SS和NH+4-N的去除率，且对BOD5的去除满足Monod方程；大部分NH+4-N的去除率与其表4-N被硝化，对NH+面负荷率呈线性关系；随着硝化反应的进行，碱度减少，pH值不断降低；循环出水可引入部分氧气，延长了污染物和附着于植物根系微生物的接触时间，提高了对污染物的去除率。

Nitrifying bacteria require oxygen to derive energy from reduced nitrogen.

600072的回答：硝化细菌需要氧气的供给来从低能氮中获取能量。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。