Actual total oxygenous absorption bag in valid time 實際總吸氧量包有效期內(nèi)
Estimation of octanol - water partition coefficient of oxygenous compounds by froup contribution 水分配系數(shù)定量關(guān)系的研究
The product has chief three kinds of models : hx - 30 , hx - 50 and hx - 100 , the number means showing oxygenous absorption , but the actual oxygenous absorption is over six times than showing quantity 本產(chǎn)品除氧劑主要有hx - 30 hx - 50 hx - 100三種型號,其中的數(shù)字為標(biāo)示的吸氧量,而實際吸氧量一般為標(biāo)示量的6倍以上。
Because thermal insulation was in oxygen - riched condition of afterburner and charred layer was porous , oxygenous gas in mixture would penetrate into charred layer and chemical reaction would take place in whole charred layer , which intensified the ablation process 由于絕熱層處于二次燃燒室富氧的環(huán)境中,而且炭化層為疏松多孔狀物質(zhì),因此將化學(xué)反應(yīng)引入到整個炭化層中。
In order to improve the electro - catalytic activity of platinum based catalyst to methanol oxidation , in this thesis , firstly prepare heteropoly acid modified pt / gc electrode with different concentration by cyclic voltammetry method , and then test the cyclic voltammetry curves individually in vitriolic and methanol solution . the study shows the best concentration for both phosphomolybdic acid and phosphotungstic acid is 1 10 ~ ( - 3 ) mol / l . and find the more heteropoly acid modified on electrode , the lower peak - up potential towards methanol because of the existence of oxygenous species 為了改善鉑基催化劑氧化甲醇的催化活性,本論文首先通過循環(huán)伏安掃描法制備了不同濃度磷鉬酸和磷鎢酸修飾的pt / gc電極,通過研究pt / gc電極在修飾前后在硫酸溶液中及含甲醇的硫酸溶液中的循環(huán)伏安行為發(fā)現(xiàn),磷鉬酸和磷鎢酸均能在ptru / c電極上發(fā)生氧化還原反應(yīng),而且雜多酸修飾濃度對pt / gc電極氧化甲醇的催化活性有很大影響。
It was concluded that , the structure of ito thin films were influenced by many working parameters such as substrate temperature , oxygenous pressure and substrate and so on . it was indicated by sem spectra of zno thin films that the surface of the sample was leveled off , and the crystals were felsitic 結(jié)果表明,對于ito薄膜,薄膜的光電性能薄膜結(jié)構(gòu)的擇優(yōu)取向性和與襯底溫度、濺射氧氣壓等工藝參數(shù)有很大關(guān)系, ito薄膜的sem表明,樣品表面較平整,且晶粒也比較致密。