atmospheric oxygen

The smallest friction coefficient of the graphite at 400 ℃ in air was attributed to the thermal chemical reaction among the carbon atoms of high activity and the atmospheric oxygen, which led to the formation of a reaction film with good lubricity on the rubbing surface.

其原因在于，石墨在较高温度下同空气发生氧化反应，在摩擦表面形成具有减摩作用的反应膜，从而使摩擦系数减小。

Hydrogen and oxygen isotope composition of water in fluid inclusions indicates that ore-bearing hydrothermal solution origined mainly from atmospheric water or deep connate water.

矿物流体包裹体成分反映了两种不同性质热液的活动，氢、氧同位素组成所指示的成矿热水以大气水或地下热卤水为主。

Remember the1980s, when it seemed the Amazon rain forest wasn't long for this world& and that humanity was threatened as atmospheric oxygen levels correspondingly declined?

记得上世纪80年代，亚马逊雨林似乎很快就要在世上消亡了，但难道这会导致大气中的氧含量相应下降，进而使人类受到威胁？

Firstly, the paper discusses the transmit mode of atmospheric radiation; some pivotal parameters for remote sensing are analyzed and calculated, such as the absorption characteristic of oxygen molecular, atmospheric transmissivity and weight function.

首先，本文探讨了大气辐射传输模式的原理，分析计算了用于遥感的几个关键参数：大气氧气分子的吸收特性、大气透过率、权重函数，给出仿真结果。

the capability to do quantitative measurement was demonstrated by recording the atmospheric oxygen absorption near 760 nm.

通过对大气中氧气在760nm处的吸收谱线的绝对强度测量，验证了该方法的定量测量能力。

The results were as fol-lows: 1. 100000/ cm3 of atmospheric oxygen anion can promote growth of embryo and in-crease hatchability of fertile eggs;

结果表明：（1）200000和100000个/cm3负氧离子有助于胚胎的生长发育，能提高种蛋的孵化率；

Rust is the product of a slow combination of iron with atmospheric oxygen and water vapor.

锈是铁和空气中的氧和水蒸汽缓慢结合的产物.