甲酰值 的英文怎麼說
中文拼音 [jiǎzhí]
甲酰值
英文
formylation value-
In this text, the developments of hydroformylation of methyl oleate and oleyl alcohol, as well as the reactions and applications of its final products were reviewed
本文綜述了對化學工業具有潛在經濟價值的油酸甲酯和油醇的氫甲酰化反應的進展，並介紹了反應產物的應用前景。The study conducted research on the following four fields : firstly, the characteristics of the interfacial polymerization system of piperazine aqueous solution / trimesoyl hexane solution were systematically investigated. the results show that at a certain molar ratio between the two monomers, piperazine and trimesoyl, at the two phase interface, a dense functional layer of ultra low pressure, high permeating flux and high salt rejection formed by controlling the time of interfacial polymerization, such as the composite membrane ( i ), the concentration in water phase is 0. 4 %, and 0. 1 % in organic phase, and the polymerization time is 1 minute
本文主要進行了四個方面的研究，首先系統分析和研究了哌嗪水溶液均苯三甲酰氯正己烷溶液界面聚合體系特徵、界面聚合反應中各影響因素對膜性能的影響等，結果發現，當界面處兩相單體（哌嗪和酰氯）分子摩爾比為某一比值時，通過控制界面聚合時間（有機相處理時間） ，可以形成超低壓高通量高脫鹽的緻密功能層，如復合膜（ ） ，水相濃度為0 . 4 ，有機相濃度為0 . 1 ，聚合時間1min 。Studies on biological exposure indices of dimethylformamide
二甲基甲酰胺生物接觸限值的研究The resistance strain showed low cross - resistance to methoxyfenozide, but it showed no cross - resistance to cyhalothrin, deltamethrin, beta - cypermethrin, phoxim, chlorpyrifos, methomyl, emamectin, fipronil and chlorfluazuron, with resistance ratios ranged from 0. 83 - to 1. 63 - fold
該種群對甲氧蟲酰肼有一定交互抗性，對有機磷、氨基甲酸酯、擬除蟲菊酯類等多種殺蟲劑都不存在交互抗性，抗性比值在0 . 83 ~ 1 . 63倍之間。Abstract : an imidazole - catalyzed acylation method of phthalic anhydride is applied to the determination of hydroxyl values of reinforcing agent is211. the analytical error is 5. 0 10 - 3. the relative standard deviation of the method is less than 0. 04 and its coefficient of variation is not more than 5. 0 10 - 3. hydroxyl values determined in different batch samples meet the design requirement completely. this method is rapid and simple, it is adaptable to conventional analysis
文摘:以咪唑催化鄰苯二甲酸酐酰化的方法測定增強劑is211的羥值，準確度高，分析誤差為5 . 0 10 - 3 ；方法精密度好，標準偏差小於0 . 4 ，變異系數不大於5 . 0 10 - 3 ，測定不同批號試樣的羥值完全符合商標值，方法快速、簡便，適用於常規分析。Occupational exposure limit for acephate in the air of workplace
車間空氣中乙酰甲胺磷職業接觸限值The oxygen sensing properties of the membranes have been studied, the results indicate that the membranes with ru ( phen ) 3cl2 have better oxygen - sensitivity than those with ru ( bpy ) 3cl2, and the membranes with the formamide content of 16 % ( v / v ) and ru ( phen ) 3cl2 content of 2. 10g / l in the precursor mixture have the best structure and quality. the fiber optic gas oxygen sensor with this sensing membrane has a detection limit of 5ppm, a response time of less than 30s, excellent reproducibility and stability. ( 2 ) a new kind of organically modified oxygen - sensitive membrane based on fluorescence quenching was prepared by sol - gel method, using dds and teos as the mixed precursor, rufchenbcla as the indicator
實驗證明：該類敏感膜的tan _ 0 tan值與氧氣濃度存在良好的線性關系；包埋ru （ phen ） _ 3cl _ 2的凝膠膜的氧敏感性相對較好；當甲酰胺為16體積比含量， ru （ phen ） _ 3cl _ 2在前驅體中濃度為2 . 10g l時，制備的敏感膜結構和性能最佳；對氣態氧檢測時，該敏感膜的響應時間小於30秒，檢測下限為5ppm ，具有較好的重復性和穩定性。Preparation of biological exposure limit for occupational exposure to dimethylformamide
職業接觸二甲基甲酰胺生物限值的研製分享友人