氧气

Because it reacts easily with oxygen in the air to produce crumbly red iron oxides.

因为它非常容易和空气中的氧气起反应，生成易碎的红色氧化铁。

Whether it is the molecules of crystallin that are used to build an eye or the haemoglobin that makes blood carry oxygen, the nature of molecules themselves means that evolution is more likely to follow a path determined by their basic structure.

不管是用来造眼睛的晶体球蛋白分子，还是促使血液输送氧气的血红蛋白，分子本身的性质意味着进化更像是跟着一条由他们的基本构造决定的路线在前进。

Her darting eyes were full of fear; an oxygen mask was on her face.

她撇过的眼中充满了恐惧；脸上带着氧气罩。

Methods: The 7 day-old SD rats were subjected to the ligation of right carotid artery, then they were put into a box filled with 8% dephlogisticated air and 92% nitrogen fums for 2.5 hours.

7日龄SD大鼠经右侧颈总动脉结扎加8%氧气和92%氮气低氧处理2.5h，建立HIBD动物模型。

One method of applying an etchant through the descender is to connect an ozone generator to an inlet port of the assembled fluid ejector and supply ozone (e.g., at a 2% or greater concentration in oxygen gas or in a mixture of oxygen and nitrogen) to the descender and the inner surface 450 through the inlet port.

一种通过该下睁部施加蚀刻剂的方法是将臭氧发生器连接到该装配的流体喷射器的入口，并且通过该入口将臭氧(例如，以氧气中或氧和氮的混合物中2％或更大的浓度)提供到该下降部和内表面450。

The preparation method comprises the following steps in sequence:(1) metric acetonitrile is added into a dual-bottleneck distilling flask that is provided with a refluxing and condensing tube, and simultaneously, long-chain dialkyl methyl tertiary amine and relevant saturated dihalide are added thereof;(2) nitrogen is pumped for 10 to 20 minutes for deoxidizing;(3) a magnetic mixing reaction is carried through for 10 to 15 hours under the condition of 78 to 83 DEG C.

其制备方法依次包括以下步骤：(1)在装有回流冷凝管的二颈蒸流烧瓶中，加入计量的乙腈，同时按一定比例加入二长链烷基甲基叔胺与相应的二卤代烷；(2)通氮气10-20分钟，排除氧气；(3)在78-83℃条件下磁力搅拌反应10～15h。

We also study buman and earth-friendly developments like dissolvable plastic and fuel cell a battery using chemical reaction of hydrogen and oxygen

我们也研究布曼像可溶性塑料和燃料电池地球友好的发展（1电池使用氢气和氧气的化学反应

The results showed that 1,5-naphthalene disulfonic acid could be degradated effectively by the catalytic supercritical wa...

结果表明，催化超临界水氧化技术能有效地降解1，5-萘二磺酸，COD去除率可达98%以上；随着反应温度的升高，停留时间的延长，COD去除率也提高；1，5-萘二磺酸在超临界水中催化氧化降解反应的级数对COD和氧气分别为0.89和0.28，活化能为56.8 kJ/mol。

The mechanism of dioxygen oxidation of 4-nitrotoluene-2-sulfonic acid to 4,4'-dinitrostilbene-2,2'-disulfonic acid in alkali solution under mild condition was investigated.

探讨了在温和条件下在碱的水溶液中氧气液相氧化 4-硝基甲苯- 2 -磺酸制取 4，4'-二硝基二苯乙烯- 2 ，2 '-二磺酸的反应机理，发现 4-硝基甲苯- 2 -磺酸在碱作用下发生离子化生成 4-硝基- 2 -磺酸基苄基阴离子，然后被活化的分子氧氧化成 4-硝基- 2 -磺酸基苄基自由基是反应的关键步骤。

The Galactic Records shows that the first extraterrestrial race to arrive on Earth was the Draconian Federation from the Alpha Draconis star system, but they failed in the attempt to shift the Earth's eco-system from oxygen-based into hydrogen-based, so they left and later a different fraction of the Draconian A11iance came back to set-up the Lemurian collective in cooperation with other two races from the Alpha Canis and Taurus constellations.

银河记录里显示，第一个到达地球的地外种族是来自Alpha Draconis星系的联盟。但是它们没有能够将地球的生态系统从氧气星球转化成氢气星球，所以他们离开了，之后一部分又返回与另两个种族Alpha Canis 和金牛座，一起建立了姆文明Lemurian。

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。