氧气

The effects of quantity of chloride,flowrate of oxygen,concentration of sulfuric acid and temperature were discussed as leaching variables.

考察和比较了氯化物用量、氧气流量、硫酸浓度、温度等因素对铜和镍浸出的影响，并讨论了其原因。

In this dissertation, the liquid phase oxidant of p-nitrotoluene and 2,4-dimethylnitrobenzene with oxygen/air to aromatic acid was discussed.

论文研究了氧气液相氧化对硝基甲苯、2，4-二甲基硝基苯制取对硝基苯甲酸、3-甲基-4-硝基苯甲酸的反应。

Under basic conditions p-nitrotoluene was oxidized to p-nitrobenzoic acid with oxygen or air. The reaction parameters, such as reaction temperature, reaction time, substrate concentration were optimized and 75% of p-nitrobenzoic acid was obtained under proper conditions.

论文探讨了在碱性条件下，用空气／氧气氧化对硝基甲苯的反应，得出了温度、时间、底物浓度、催化剂用量等工艺参数对反应的影响，在较佳的工艺条件下，对硝基苯甲酸的收率可达到75％左右。

I woke up to see an oxygen mask on my nose.

我醒来时看到一个氧气面罩对我的鼻子。

It's important to put on your own oxygen mask before trying to help anyone else.

在你帮助别人以前，很重要的一点就是请带上你自己的氧气面罩。

I had an oxygen mask to help me breathe.

我有一个帮助我呼吸的氧气罩。

It's a little like putting your own oxygen mask on first on the airplane.

这有点像在飞机上你要先戴上自己的氧气罩。

Put your oxygen mask on as quickly as possible.

提出你的氧气罩就尽快。。

Like they say on the airplane — apply your own oxygen mask first; then your child's.

像他们说，就在飞机上-适用于您自己的氧气罩第一；那么您的孩子的。

Place the oxygen mask on yourself first, so that you're around to help others.

把氧气罩，自己首先，让你靠近来帮助别人。

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。