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反应时间    
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  time
    Calculation of Response Time and Overshoot for A Vehicle System of Two Degrees of Freedom
    二自由度汽车反应时间和超调量的计算
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    THE OPTIMUM RACTION TIME IN BATCH AND SEMI-BATCH REACTORS
    间歇与半间歇式反应器的最佳反应时间
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    Reaction Time
    反应时间
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    The Influence of Reaction Time on the Effect of the Manganese Removal of "Black-sand"
    反应时间对“黑砂”除锰效果的影响
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    AN INVESTIGATION ON CATIONIC POLYMERIZATION OF α-METHYLSTYRENE WITH Cl_2/TiCl_4 INITIATOR SYSTEM Ⅱ. EFFECTS OF PO1YMERIZATION TEMPERATURE, SOIVENT AND REACTION TIME
    Cl_2/TiCl_4体系引发α-甲基苯乙烯阳离子聚合的研究 Ⅱ.聚合温度、溶剂用量以及反应时间的影响
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  reaction time
    Reaction Time
    反应时间
短句来源
    The Influence of Reaction Time on the Effect of the Manganese Removal of "Black-sand"
    反应时间对“黑砂”除锰效果的影响
短句来源
    AN INVESTIGATION ON CATIONIC POLYMERIZATION OF α-METHYLSTYRENE WITH Cl_2/TiCl_4 INITIATOR SYSTEM Ⅱ. EFFECTS OF PO1YMERIZATION TEMPERATURE, SOIVENT AND REACTION TIME
    Cl_2/TiCl_4体系引发α-甲基苯乙烯阳离子聚合的研究 Ⅱ.聚合温度、溶剂用量以及反应时间的影响
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    The Reaction Time in Stroke Patients
    脑中风患者的反应时间研究
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    A Preliminary study of Visual reaction time with Computer
    用微机作视觉反应时间的初步研究
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  reaction tim e
    the reactiontem perature is 110℃ and reaction tim e is 3 0h.
    反应温度为110℃; 反应时间30h。
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    Results Com pared to controlgroup, only the perform ance of length discrim ination decreased significantly(P< 0.05) after exposure to 2 800 m for 1 h. The reaction tim e ofalltests w as increased significantly(P< 0.01) and perform ance decreased after exposure to 3 600 m for 1 h;
    结果 以300 m 高度所测参数作为正常对照值,2 800 m 缺氧暴露1 h,长度判断的综合绩效已低于对照值(P< 0.05),3 600 m 暴露1 h 各项测验的反应时间明显延长(P< 0.01),综合绩效显著降低。
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    Based on the heterogenetic reaction, a process of preparation of Na C Sw asproposed. The effects ofreaction conditions, such as the concentration of H2 S O4, the reac tion tem perature and the reaction tim e, on the conversion ratio of cellulose, the yield of Na C S, the degree of substitution and viscosity of Na C Ssolution w ere studied.
    采用了非均相反应制备 Na C S的方法,建立了工艺流程,并考察了不同游离硫酸浓度(4.5~5.5m ol/ L)、不同反应温度(- 10℃~0℃)下的纤维素转化率、 Na C S得率、取代度 D S和特性粘度 η1% 随反应时间的变化关系。
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    Methods Twenty paid volunteers, m ale, 19~22 age,w ere deprived totalsleep over 50 hours. Every 6 hours during TSD they w ere tested in a look for m issing num ber,visualsearch figure,visualcolor,position reaction tim e and m istakes num ber in test.
    方法 对20 例自愿者,男性,年龄19~22 岁,全部睡眠剥夺50 小时,试验中每6小时对受试者寻找缺失数字、视觉搜索图形、视觉颜色、位置反应时间以及在实验中所出现的错误数测试一次。
短句来源
    Results After 40 hours in TSD,visualm ove reaction tim e begin to prolong gradually,and m istake increases in test.
    结果 发现剥夺睡眠40 小时之后视动反应时间开始逐渐延长,反应出现错误增多。
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  the reaction time
    The Reaction Time in Stroke Patients
    脑中风患者的反应时间研究
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    4-Tert-butylphenylboronic acid was synthesized with trimethyl borate and Grignard reagents which was prepared with 1-bromo-4-tert-butylbenzene and metal magnesium as raw materials under N2. An optimized process was obtained as follows: 1.5∶1molar ratio of 1-bromo-4-tert-butylbenzene to trimethyl borate,the temperature -20~-30℃,and the reaction time 140min. The final yield was 69.5%.
    以对叔丁基溴苯为原料,在氮气保护下,通过格氏反应合成了对叔丁基苯硼酸,考察了温度、反应时间和物料配比等因素对收率的影响,优化合成条件为:n(对叔丁基溴苯)∶n(硼酸三甲酯)=1∶1.5,反应温度为-20~-30℃,反应时间140min,总收率69.5%。
短句来源
    Various reaction factors influencing the yield of the target product were discussed. The optimum reaction conditions were as follows:the molar ratio of O-chloronitrobenzene, hydrazine hydrate to PEG-800 was 1∶4∶0.03, the speed of agitator 500 r/min,the reaction time 5 h,the reaction temperature 110℃.
    讨论了催化剂种类、原料摩尔比、反应温度、反应时间、搅拌速度等因素对目的产品收率的影响,得出适合的操作条件为:n(邻硝基氯苯)∶n(水合肼)∶n(PEG-800)=1∶4∶0.03、反应温度110℃、反应时间5h、搅拌速度500r/min,产品收率达98.1%。
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    The main influencing factors on the CCMP conversion ratio are examined. The experimental results show that under 700 r/min stirring rate,reflux temperature 92 ℃,V(OH-)/V(CCMP)=5∶1,10%(wt) of alkali solution concentration,DMF 15%~ 30%(wt) against to CCMP,20%~25%(wt) better,the reaction time 6 h,the conversion ratio of CCMP can reach over 95%.
    考察了影响CCMP转化率的主要因素,结果表明,在搅拌速度700r/min,碱液浓度10%(质量分数),温度92℃,m(DMF)/m(CCMP)=0.15~0.30,最好0.20~0.25,V(OH-)/V(CCMP)=5∶1,反应时间6h条件下,CCMP转化率可达95%以上。
短句来源
    the quantity of catalyst was equal to 0.6% of feedstocks,the reaction temperature was 78~110 ℃,and the reaction time was 45 min. The test results have shown that(H_4SiW_(12)-)O_(40)/MCM-48 is an excellent catalyst for synthesizing butanone 1,2-propanediol ketal with its yield reaching over 91.9%.
    实验表明:H4SiW12O40/MCM-48是合成丁酮-1,2-丙二醇缩酮的良好催化剂,在n(丁酮)∶n(1,2-丙二醇)=1∶1.6,催化剂用量为反应物料总质量的0.6%,环己烷为带水剂,反应时间45 min的优化条件下,丁酮-1,2-丙二醇缩酮的收率可达91.9%。
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  time
The proof is based on a variant of Moser's method using time-dependent vector fields.
      
We present two-sided singular value estimates for a class of convolution-product operators related to time-frequency localization.
      
The Balian-Low theorem (BLT) is a key result in time-frequency analysis, originally stated by Balian and, independently, by Low, as: If a Gabor system $\{e^{2\pi imbt} \, g(t-na)\}_{m,n \in \mbox{\bf Z}}$
      
Gabor Time-Frequency Lattices and the Wexler-Raz Identity
      
Gabor time-frequency lattices are sets of functions of the form $g_{m \alpha , n \beta} (t) =e^{-2 \pi i \alpha m t}g(t-n \beta)$ generated from a given function $g(t)$ by discrete translations in time and frequency.
      
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