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time    
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  时间
    The testing and determination of the solidification time of rapidly solidified powder coating materials and a specially used heating bath
    快速固化粉末涂料固化时间的测定及专用加热池
短句来源
    The optimum conditions for synthesizing the intermediate,4-hydroxy-2-octanone are as follows: reaction time,6 h; reaction temperature,(25 °C); concentration of alkali,4%;
    缩合反应合成中间体4-羟基-2-辛酮的最佳条件为:反应时间6 h,反应温度25°C,碱的浓度4%,丙酮与戊酮的摩尔比4∶1,脱水采用磷酸,副产物少,收率高(85%);
短句来源
    The results showed that the optimal conditions for synthesis of benzyl acetate were: the molar ratio of acetic acid to benzyl alcohol was 2∶1,the amount of the water carrier was 40%,the amount of the catalyst was 3.5%,and reaction time was 6 h.
    结果表明,乙酸苄酯最适宜的合成工艺条件为:酸醇摩尔比2∶1、催化剂用量3.5%(占总质量)、带水剂(苯)用量40%(占总质量)、反应时间6 h。
短句来源
    g-1,the degree of circumfluence was two,and the every time of extraction was 1h was optimal.
    g-1,回流次数为2次,回流时间为每次1 h的条件下,提取效果最好。
短句来源
    Isoamyl isovalerate was synthesized through esterification reaction by using isovaleric acid and isoamyl alcohol as raw materials and nano-H4SiW12O40/SiO2 as catalyst, the influencing factors in the reaction were studied, and the results showed that the esterification rate could reach 98.6 % under the conditions of the ratio of alcohol-acid 1.4∶1, the use level of catalyst 5 %, and the reaction time 1.5 h.
    以纳米复合钨硅杂多酸为催化剂,异戊酸和异戊醇为原料,通过酯化反应合成苹果油,对酯化反应的影响因素进行了研究,结果表明,在醇酸物质的量比为1.4∶1,催化剂用量5%,反应时间1.5h的条件下,酯化率可达98.6%。
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    It was discussed that the effects of extracting pressure, temperature and time on the extraction efficiencies of the camellia oil by supercritical CO2.The optimal extracting conditions are determined: extracting pressure 25MPa, the temperature 40℃ and the time 2.5 hours. The extraction efficiencies of camellia oils was up to 97.5%.
    研究了超临界CO2萃取茶油,萃取压力、温度、间对茶油提取率的影响,结果表明,萃取压力25MPa,温度40℃,萃取间为2.5h,茶油的提取率达到97.5%。
短句来源
    The results showed that optimal solid culture medium was that the optimal C source was wheat straw∶wheat surface=4∶6,stuff∶water=1∶2.5,adding 1%(NH4)2SO4,0.1% Tween80,the optimal original pH is 5.0(for FPA) or 3.0(for CMC). The optimal culture temperature was 28 ℃,incubation time was 96 hours.
    结果表明:最佳碳源为小麦秸粉∶麦麸(4∶6),料∶水=1∶2.5,加入1%(NH4)2SO4,0.1%Tween80,初始pH值为5.0(滤纸酶活)或为3.0(CMC酶活),28℃下培养96 h其产纤维素酶活力最高.
短句来源
    With response surface analysis,the predicted maximum enzyme activity was 549.65 U/ml at the condition of 19.8 g/L maltose concentration,18.2 h culture time and 0.2 ml inoculate. The demonstration test showed that the enzyme activity were 529 and 544 U/ml,which means this model could predict precisely.
    利用响应面分析法预测了当麦芽糖浓度为19.8 g/L,培养间为18.2 h,接种量为0.2 ml酶活达最大,为549.65 U/ml,通过试验验证,实际酶活分别为529、544 U/ml,该模型有较好的预测性。
短句来源
    The result showed that when extraction pressure is 25~30 MPa,temperature is 50 ℃,time is 3.5 h,the extraction rate is 83.59%. The quality of walnut oil with SFE-CO2 was superior to the other two kinds of oils from methods of squeezing and Soxhlet extractor.
    结果表明:当萃取压力25~30 MPa、萃取温度50℃、萃取间3.5 h,核桃油萃取率为83.59%,采用该工艺提取的核桃油品质优于压榨法和索氏抽提法所得油脂。
短句来源
    In repeated fed-batch culture,the optimized time and volume for refreshing culture was 90% per 48 hours.
    然后确定了反复补料分批培养更换新鲜培养基的最佳间为每次培养进行48h后、体积比例为90%。
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    g-1,the degree of circumfluence was two,and the every time of extraction was 1h was optimal.
    g-1,回流数为2,回流时间为每1 h的条件下,提取效果最好。
短句来源
    The optimal conditions of pilot-plant process by IPA extraction were:75℃ extraction temperature,3 h extraction time,3 extraction times,and moisture contents of oilseeds 11.02%. Under the optimal conditions the residual oil of meal was 1.06%.
    结合实际生产要求得到异丙醇浸出工艺条件为:浸出温度75℃,浸出时间3 h,浸出数3,原料水分含量11.02%,此时粕中残油率为1.06%。
短句来源
    two times bleaching technology,the first time in the conditions of dosage of bleaching earth 4%,time 30 min and temperature 90 ℃,the second time 3% bleaching earth,temperature 85℃,the vacuum 0.1 MPa,time 15 min;
    采用二脱色工艺,第1活性白土加量4%,脱色时间30 m in,脱色温度90℃; 第2活性白土加量3%,脱色时间15 m in,温度85℃,真空度0.1 MPa;
短句来源
    The optimum conditions were φ(ethanol)=50% ethanol solution as extractant,ratio of materials 1∶13,extraction temperature 70 ℃ and extraction time 4.0 h. The extraction yield of resveratrol could reach 0.34%.
    通过单因素实验和正交实验确定了最佳提取条件:体积分数50%的乙醇为提取剂,提取温度70℃,m(葡萄穗轴)∶m(乙醇)=1∶13,提取时间4.0 h,白藜芦醇一提取率达0.34%。
短句来源
    The optimized condition of rapid agitation extraction of neem oil was:petroleum ether solvent,components ratio 1 ∶2.5(g ∶mL),extraction time 7 min every time,for 3 times. The oil yield was 30.4 %.
    由此得出,快速搅拌法浸提印楝油的最佳条件是:溶剂石油醚、料液比1∶2.5(g∶mL,下同)、时间每7min、浸提3,出油率30.4%;
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    In the preparation process of CPPs, the temperature and pH impact on enzymatic activity which affect greatly rate of reaction. In order to achieve intelligent production and great efficiency, it is essential to measure and control accurately in real time to the temperature, pH and volume of the material in the continuous enzymatic membrane reactor.
    在制备CPPs的过程中,反应液温度和pH值对酶的活性影响较大,酶的活性和浓度对反应的速度影响较大,因此对酶膜耦合连续反应器反应物温度、pH值和体积进行实时测量与控制,实现CPPs制备过程的智能化,对CPPs的高效连续耦合工业化生产是非常必要的。
短句来源
    Fluorescent compounds have outstanding advantages, such as high sensitivity and selectivety, short reaction time, real time and real space sensing, and they are generally used as probes on race detection.
    荧光化合物具有高灵敏性、选择性、分辨时间短、实时原位检测等突出优点,因而广范地用作探针化合物,对微量物质进行检测。
短句来源
    Since the speed of physical development can be identified by the intensity of light reflected from the white silver(hydrophobic part)on the surface of printing material as a function of CCD elements and reaction time,the development process of printing-plate direct-making silver salt graphic arts material can be monitored directly and visually in situ and on real-time.
    原位地监测了印刷用银盐直接制版材料的显影过程,通过版材表面白银(亲油部分)的反射光强(Intensity)随CCD单元及反应时间的变化来表征物理显影速率,达到了直观、快速、实时监测物理显影全过程的目的。
短句来源
    Research shows that the profit function is the most direct and sensitive variable of the fermentation process. Thus it is of great significance to get the real time value and prediction of profit function for optimization purpose.
    效益函数是发酵过程运行状态的最直接、最灵敏的一个指标,因此,实时地获得它的实际值和预报值对于过程优化调度十分关键.
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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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