For a given media , and at a constant total pressure and temperature , the partial pressure of oxygen is proportional to oxygen mole fraction 對(duì)一個(gè)給定的媒介,在恒定的總壓和溫度下,局部壓力與氧的克分子數(shù)成比例。
The structure of triuranuim octaoxide ( u3o8 ) and the oxidation of uranium metal were studied by x - ray diffraction ( xrd ) and rietveld method in different partial pressure of oxygen and temperatures 本論文利用x射線衍射( xrd )并結(jié)合rietveld方法較系統(tǒng)地對(duì)金屬鈾和八氧化三鈾( u _ 3o _ 8 )在不同溫度、壓力條件下的表層氧化情況和結(jié)構(gòu)變化進(jìn)行了分析研究。
Denitrification and nitrogen fixation in 10 cm 20 cm horizon are higher than those in other soil horizons , in which the partial pressure of oxygen is lower than that in surface horizon , and the number of microorganisms is more than that in below horizon 高寒草甸土壤中未發(fā)現(xiàn)有好氣性自生固氮菌,但嫌氣性自生固氮菌的數(shù)量眾多。在高寒草甸嚴(yán)酷的自然條件下,嫌氣性自生固氮菌為大氣氮素固定的主要承擔(dān)者。