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- The yield of the reaction was determined using chemistry titration by which the unreacted active hydrogen was detected. 采用化学滴定法测定了未反应活泼氢的质量分数，从而确定了含氢硅油中活泼氢的转化率。
- On the basis of the features of active hydrogen atom and the literature reports,the general formula of glyphosate is given. 归纳了草甘膦的性质，并根据草甘膦分子存在着活泼氢原子和基团的特点，结合文献中各取代物的报导情况，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. 阐述了在金刚石薄膜生长过程中气相碳源、固相基底以及激活氢分子与原子对生成产物的影响。
- 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改性能增加分子筛的脱硫效果，其原因可能是增加了分子筛的供氢能力，形成表面活性氢，促使噻吩饱和、开环裂化。
- 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. 供氢剂在无催化剂和氢气存在条件下 ,可提供活性氢原子推迟或阻止第二液相的形成 ,有效抑制生焦 ;
- 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. 用过氧化氢氧化炭黑以后，通过对苯酚磺酸(p-PS)羟基邻位的活泼氢与氧化炭黑的接枝反应，在炭黑表面导入亲水性基团。
- 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机化合物氨基中的活泼氢后，获得高化学稳定性的中间产物且不影响其他基团的反应活性。
- The article describes mechanism of activating hydrogen peroxide bleaching about new bleaching auxiliaries, research and development, and preliminary using trend. 阐述了新型过氧化氢助漂剂活化过氧化氢漂白的原理、研究与发展,及初步的应用趋势。
- determination of active hydrogen 活性氢含量测定
- apparatus for determination of active hydrogen 活性氢定量装置
- Water contains hydrogen and oxygen. 水含有氢和氧。
- The orient has been playing an active role in the world economy. 亚洲一直在世界经济中发挥积极作用。
- He is an active member of the school's stamp club. 他是学校集邮俱乐部的一名活跃会员。
- Water is composed of hydrogen and oxygen. 水由氢和氧组成。
- An active volcano may explode at any time. 活火山随时都有可能爆发。
- Is it wise to engage in active sports at your age? 我这样的年纪积极参加体育活动是否明智？
- She was active as a left-winger in the party. 她是党内积极的左翼分子。
- He was very active and rode down several horses. 他劲头很大，一连骑了好几匹马。
- The other two activated hydrogens still can take place mannich reaction with amine and formaldehyde. 余下的两个活性氢位置仍然能与胺类、醛类发生曼尼期碱的缩合反应。
- She plays an active part in local politics. 她积极参与地方政治活动。
