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- The yield of the reaction was determined using chemistry titration by which the unreacted active hydrogen was detected. 採用化學滴定法測定了未反應活潑氫的質量分數,從而確定了含氫硅油中活潑氫的轉化率。
- determination of active hydrogen 活性氫含量測定
- apparatus for determination of active hydrogen 活性氫定量裝置
- On the basis of the features of active hydrogen atom and the literature reports,the general formula of glyphosate is given. 歸納了草甘膦的性質,並根據草甘膦分子存在著活潑氫原子和基團的特點,結合文獻中各取代物的報導情況,提出了草甘膦及其衍生物的通式。
- The factors, which may affect the production of diamond films, have been discussed, such as source of carbon in gas, substrate in solid and active hydrogen molecules and atoms. 闡述了在金剛石薄膜生長過程中氣相碳源、固相基底以及激活氫分子與原子對生成產物的影響。
- The reason for the increase of desulfuration effect of modification by Zn-Al gel may be that the zeolite by modification enhances the supply ability of active hydrogen, which promotes saturation and cracking of thiophene. Zn-Al改性能增加分子篩的脫硫效果,其原因可能是增加了分子篩的供氫能力,形成表面活性氫,促使噻吩飽和、開環裂化。
- Hydrogen donor can provide active hydrogen atom to postpone or control the forming of the second liquid phase and effectively restrain the coking when catalyst and hydrogen were absent. 供氫劑在無催化劑和氫氣存在條件下 ,可提供活性氫原子推遲或阻止第二液相的形成 ,有效抑制生焦 ;
- hydrogen determination apparatus 氫離子測定器
- After the oxidation of carbon black with hydrogen peroxide, hydrophilic group was introduced onto carbon black surface by the grafting reaction of carbon black with the active hydrogen of p-PS. 用過氧化氫氧化炭黑以後,通過對苯酚磺酸(p-PS)羥基鄰位的活潑氫與氧化炭黑的接枝反應,在炭黑表面導入親水性基團。
- hydrogen determination with coulometric method 電量法測氫
- The main elements from aspects of Silicon content and dissolvability of hydrogen determine the change of secondary blowhole quantity. 研究合金成份和原始含氣量對生成二次氣孔的影響。
- When trimethylsilyl is used to substitute the active hydrogen in amido,the intermediate having high chemistry stability can be obtained without effecting the other reactive groups. 即用三甲硅基取代有機化合物氨基中的活潑氫后,獲得高化學穩定性的中間產物且不影響其他基團的反應活性。
- The principle, structure and characteristic of Hydrogen determinator and it's application in environmental testing was summerized. 本文敘述了定氫儀的測氫原理、結構、特點及定氫儀在環境試驗中的用途。
- The article describes mechanism of activating hydrogen peroxide bleaching about new bleaching auxiliaries, research and development, and preliminary using trend. 闡述了新型過氧化氫助漂劑活化過氧化氫漂白的原理、研究與發展,及初步的應用趨勢。
- Water contains hydrogen and oxygen. 水含有氫和氧。
- The orient has been playing an active role in the world economy. 亞洲一直在世界經濟中發揮積極作用。
- He is an active member of the school's stamp club. 他是學校集郵俱樂部的一名活躍會員。
- An active volcano may explode at any time. 活火山隨時都有可能爆發。
- Is it wise to engage in active sports at your age? 我這樣的年紀積极參加體育活動是否明智?
- Water is composed of hydrogen and oxygen. 水由氫和氧組成。