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- Tri-screw extruder should not be applied to the extrudate which should be dealed within a short reactive time. 对反应时间不宜过长的聚合物，应避免使用三螺杆挤出机。
- Room temperature, alkalescence surroundings are propitious to guest's inclusion, and reactive time has little influence to inclusion process. 分析反应因素对包合过程的影响实验结果认为常温，弱碱性环境有利于客体的包合。
- If the few potassium iodide was added to the O-alkylation of 2,5-dimethylphenol and 1,3-dibromopropane,the reactive time would decrease and the yields would reach to 67.8%. 在2;5-二甲基苯酚与1;3-二溴丙烷的O-烷基化反应中加入少量碘化钾;反应时间可大大缩短;且产率亦可达67.;8%25
- The effect of N acylation on the solubility and crystallinity of chitosan and the effect of reactive time, temperature and proportion on degree of deacetylation were investigated. 研究了N-酰化反应对壳聚糖溶解性能和结晶性能的影响以及反应时间,温度,配比对脱乙酰度的影响。
- After the modification,the reactive time was shortened by half of the conventional process,and the ratio of utilization of DCPA increased from 75% to 80%,the yield of phosgene,from 38% to 75%. 工艺改造后,反应周期缩短了一半,DCPA的收率由75%25提高到80%25,光气收率由38%25提高到75%25。
- A new method about synthesis of pyridine-substituted nitronyl nitroxide radicals was reported. Compared with the traditional method, the reactive time was shorted and the yield was increased. 报道了一种合成吡啶基氮氧自由基的新方法,与传统方法对比,缩短了反应时间,提高了产率,是合成吡啶基氮氧自由基的一种简便方法
- Fruit juices ferment if they are kept a long time. 果汁若是放置很久，就会发酵。
- Time is sometimes called the fourth dimension. 时间有时被称为第四度空间。
- I think the work can be completed ahead of time. 我认为这项工作能提前完成。
- He will come on time even though it rains. 即使下雨，他还是会准时来的。
- Reading occupies most of my free time. 阅读占去了我大部分的闲暇时间。
- I need some time to orient my thinking. 我需要一些时间来使我的思想适应。
- A transistorize radio takes no time to warm up. 晶体管收音机不需要预热时间。
- At that time he had two helpers. 当时他有两个助手。
- I'm sorry to obtrude on you at such a time. 我很抱歉在这个时候打扰你。
- I referred to my watch for the exact time. 我看了一下手表好知道准确的时间。
- God mete out justice in his own good time. 羞恶自有报，只争迟与早。
- I spend most of my time scouting around for book. 我把大部分时间都用来找书了。
- It may take a long time to find a solution to the problem. 也许要花很长时间才能找到解决这个问题的办法。
- The teacher let him off the hook with a warning this time. 这一次老师放过他，只给了一个警告。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
