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蒸发时间
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  evaporation time
     The optimum preparation parameters were determined as follows: PES concentration16%~22%,PVP concentration 10%~14%,gel temperature 303~313 K,evaporation time 60~120 s.
     并进一步探讨了显著因素PES浓度、PVP浓度、凝固浴温度对膜性能的影响规律,得出制备截留分子量为67 000的超滤膜的最佳条件为:PES浓度16%~22%,PVP浓度10%~14%,凝固浴温度303~313 K,蒸发时间60~120 s.
短句来源
     The charged sulfonated polysulfone UF membranes were prepared by L-S phase translation. The influence of various elements effecting flux and the rate of protein rejection were investigated,and the optimum conditions were confirmed as fellows:SPSF concentration 20%,evaporation time 10s,the degree of sulfonation 37%,acetone concentration 10% and precipitation temperature 20℃.
     以自制磺化聚砜为膜材,采用L—S相转化法制备荷电聚砜超滤膜,考察了各因素对酵母味素膜通量和蛋白质截留率的影响显著程度,得到较佳制膜工艺组合:磺化聚砜浓度20%,蒸发时间10 s,磺化度为37%,丙酮浓度10%,凝固浴温度20℃。
短句来源
     The membrane was composed of 15-16% of polysulfone with a suitable additiveagent, and prepared in specified evaporation time, ambient relative humidity andcoagulation bath condition, 99.999% removal of coliform group organisms and99.99% of f_2 bacteriophage (approximately 250A in diameter) were achieved. However, owing to the presence of pinholes on membrane, leakages were foundfrequently.
     当聚砜浓度在15—16%时,配以适当的添加剂,控制铸膜时的蒸发时间、环境相对湿度和凝固浴条件等,所制备的膜可以滤除水中大肠菌群99.999%,f_2噬菌体(球形体直径约250A)99.99%。
短句来源
     An increase in mass Fraction of PEI,H_3PO_4,DGDE in casting solution and evaporation time will cause a decrease in the flux of pure water and an increase in the solute rejection rate of membrane.
     增加铸膜液中PEI、H3PO4、DGDE的含量,或者延长蒸发时间,均可提高膜的截流性能,同时也减小膜的水通量;
短句来源
     Some factors, such as hydrolytic temperature,the species and amount of peptizator, evaporation time,aged temperature and time, etc.
     在制备溶胶的过程中,实验考察了水解温度、胶溶剂种类及用量、蒸发时间、老化时间及温度等因素对最终溶胶稳定性能的影响.
短句来源
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  vaporization-time
     Analysis of vaporization of a single water drop and study on its vaporization-time
     水滴蒸发的理论分析与蒸发时间的研究
短句来源
  “蒸发时间”译为未确定词的双语例句
     The relative variable factor between environment temperature T andevaporation time t,K_1=dt/dT=-1/2,and the relative variable factor betweentemperature T-1 of coagulating bath and heat-treatment temperature T_2,K_2=dT_2/dT_1=-1,have been confirmed.
     找出了环境温度与蒸发时间的变量因子:K_1=(dt)/(dT)=-(1/2); 热处理温度相对凝胶浴温度的变量因子:K_2=(dT_2)/(dT_1)=-1。
短句来源
     It is found that the suitable conditions for casting HPCA RO membrane are adding glycerine—n-propanol or phosphoric acid as additive, evaperating for 30-60s, and pre-treating with 70℃ water for 3—5 min. The membranes with 95-98% of salt rejection of NaCl and 1.0—2.1 ml/cm~2·h of water flux are obtained when the operating pressure is 2 MPa.
     实验表明,以甘油—正丙醇或磷酸为添加剂,蒸发时间30—60s,预热处理温度70℃,时间3—5min,可得到在2MPa操作压力下,氯化钠脱除率95—98%,水通量1.0~2.1ml/cm~2·h的反渗透膜。
短句来源
     It was found thatthe suitable conditions for casting HPCA RO membrane were using glyce-rine-n-propanol or phosphoric acid as additive,evaperating for 30-60 seconds,and pre-treating with 70℃ water for 3—5 min. The membranes have theperformance of 95—98% rejection of NaCl and 1.0—2.1 ml/(cm~2·h) of waterflux when the operating pressure is 2MPa.
     实验表明,以甘油—正丙醇或磷酸为添加剂,蒸发时间30—60s,热处理温度70℃,时间3—5 min,可得到在2 MPa 操作压力下,氯化钠脱除率95—98%,水通量1.0—2.1 ml/cm~2·h的反渗透膜。
短句来源
     An Simulation and Calculation of the Vapouring Time of Diesel Oil Droplet
     柴油油滴蒸发时间的模拟计算
短句来源
     The optimum conditions were confirmed as follows:PF concentration 11%,additive content 0.28% and evaporization time 20 seconds.
     得到最佳制膜条件:聚砜质量分数为11%,添加剂质量分数为0.28%,蒸发时间为20s.
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  evaporation time
The evaporation time controls the deposit thickness, while the deposition temperature determines the phase structure.
      
Formulas for the evaporation time of the drops are analyzed, the model of rigid elastic spheres being used for the interaction of the molecules.
      
The measured characteristics are the evaporation time, the atomic beam intensity, the evaporation rate, the saturated vapor pressure, and the heat of thallium evaporation.
      
After a certain evaporation time the mobile phase of the SFC is directed to the solid phase, introducing the solvent-free sample into the SFC.
      
Using this sizing technique we find that, for the growth of silver at room temperature, the average radius increases linearly with the cube root of evaporation time.
      
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For the purpose of drinking water disinfection, the study on removing bacteriaand viruses from water by polysulfone ultrafiltration membrane has been carried out.The membrane was composed of 15-16% of polysulfone with a suitable additiveagent, and prepared in specified evaporation time, ambient relative humidity andcoagulation bath condition, 99.999% removal of coliform group organisms and99.99% of f_2 bacteriophage (approximately 250A in diameter) were achieved.However, owing to the presence of pinholes on...

For the purpose of drinking water disinfection, the study on removing bacteriaand viruses from water by polysulfone ultrafiltration membrane has been carried out.The membrane was composed of 15-16% of polysulfone with a suitable additiveagent, and prepared in specified evaporation time, ambient relative humidity andcoagulation bath condition, 99.999% removal of coliform group organisms and99.99% of f_2 bacteriophage (approximately 250A in diameter) were achieved.However, owing to the presence of pinholes on membrane, leakages were foundfrequently. Complete sterilization was uncertain and virusescontent below the drinkingwater standard was not likely to be obtained. Further improvement on the preparationmethod and performance of membrane may enable it to be used practically in drinkingwater disinfection.

为了饮水消毒的目的,观察了聚砜超滤膜去除水中细菌、病毒的效果。当聚砜浓度在15—16%时,配以适当的添加剂,控制铸膜时的蒸发时间、环境相对湿度和凝固浴条件等,所制备的膜可以滤除水中大肠菌群99.999%,f_2噬菌体(球形体直径约250A)99.99%。但由于膜存在针孔,较普遍有漏菌现象,因而不能保证彻底灭菌和使水中病毒含量符合饮水卫生标准。进一步改进膜的制备条件及其物理化学性能,有可能应用于水的消毒。

Use of tantalum electric evaporator for micro sampling in ICP-AES is described.Micro volume(10—201μl)of sample solution is evaporated in the tatalum evaporator,and the sample vapor is carried to the ICP by argon gas for excitation.The characteristic of the tantalum evaporator is discussed with emphasis on the process of sample evaporation,the relation between spectral signals and evaporation temperature and time,initial temperature of element evaporation giving rise to ICP-AES signals,and the matrix effect of...

Use of tantalum electric evaporator for micro sampling in ICP-AES is described.Micro volume(10—201μl)of sample solution is evaporated in the tatalum evaporator,and the sample vapor is carried to the ICP by argon gas for excitation.The characteristic of the tantalum evaporator is discussed with emphasis on the process of sample evaporation,the relation between spectral signals and evaporation temperature and time,initial temperature of element evaporation giving rise to ICP-AES signals,and the matrix effect of tantalum.The experimental facility is simple and easy to operate,and the method is suited for use in analysis of micro quantities of asmples.

本文着重讨论了钽片蒸发器用于ICP-AES微量取样的性能特点,对样品的蒸发过程和光谱信号随蒸发温度和蒸发时间的变化关系,分析元素光谱信号起始时的蒸发温度,蒸发器材料钽的基体效应等进行了研究,并选择了多元素同时分析的工作参数。本方法设备简单,操作方便,分析精度高,适用于微量样品的分析。

The heating and evaporation processes of single coal-water slury droplet under forced convection have been studied in this paper, and the calculation models have been established. The calculation results are in good agreement with experimental results, so that they can be used for estimating heating and evaporation time of a single coal-water slury in engineering application.

本文对强迫对流条件下单颗粒水煤浆的加热、蒸发过程进行了研究,建立了计算模型,计算结果与实验结果符合较好,因此可供工程上估算单颗粒水煤浆的加热时间和蒸发时间用.

 
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