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gas沉析
相关语句
  “gas沉析”译为未确定词的双语例句
     Factors Affecting Particle Size in Supercritical CO_2 Antisolvent Precipitation HMX
     超临界CO_2GAS沉析HMX制细过程的影响因素
短句来源
     Crystal Morphology of HMX and Its Control with Supercritical CO_2 Anti-solvent Precipitation
     超临界CO_2GAS沉析HMX过程的颗粒形貌控制
短句来源
     The precipitation of 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane (HMX) in acetone solution using supercritical CO2 antisolvent and the factors affecting particle size were studied.
     研究了超临界CO2GAS沉析丙酮溶液中HMX的过程压力、温度、溶液初始浓度和溶液的膨胀速度及影响晶体粒度的因素。
短句来源
     The particle size and crystal morphology control of precipitated 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane (HMX) in acetone solution using supercritical CO_2 anti-solvent were studied.
     文章研究了超临界CO2GAS沉析HMX丙酮溶液过程的颗粒形貌控制。
短句来源
  相似匹配句对
     GAS is dynamic reconfigurable.
     GAS是动态可重构的。
短句来源
     Factors Affecting Particle Size in Supercritical CO_2 Antisolvent Precipitation HMX
     超临界CO_2GAS沉析HMX制细过程的影响因素
短句来源
     Crystal Morphology of HMX and Its Control with Supercritical CO_2 Anti-solvent Precipitation
     超临界CO_2GAS沉析HMX过程的颗粒形貌控制
短句来源
     Precipitation of Hydrated Titanium Dioxide
     水合二氧化钛的沉析
短句来源
     GAs inhibited FD.
     GAs为成花抑制物;
短句来源
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  gas precipitation
The cavity nucleation rate is generally increased as a result of solute segregation to the surfaces and interfaces and/or gas precipitation into cavity volume.
      


The precipitation of 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane (HMX) in acetone solution using supercritical CO2 antisolvent and the factors affecting particle size were studied. The results show that the average particle size is decreased with the increasing of pressure. The temperature is the major reason that it cause to form α-HMX, and the average particle size is slightly increased with the increasing of temperature. As compared with pressure and temperature, the average particle size is sensitive...

The precipitation of 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane (HMX) in acetone solution using supercritical CO2 antisolvent and the factors affecting particle size were studied. The results show that the average particle size is decreased with the increasing of pressure. The temperature is the major reason that it cause to form α-HMX, and the average particle size is slightly increased with the increasing of temperature. As compared with pressure and temperature, the average particle size is sensitive to initial feed concentration of HMX, and the increasing of concentration will cause the increasing of particle size. The expansion speed is also a factor affecting the particle size and size distribution. The microparticle of HMX with narrow size distribution is obtained when the solution is expanded rapidly and the supersaturation ratio is consumed by mass nucleation.

研究了超临界CO2GAS沉析丙酮溶液中HMX的过程压力、温度、溶液初始浓度和溶液的膨胀速度及影响晶体粒度的因素。结果表明,压力增加,沉析颗粒的平均粒度减小;温度控制沉析晶体的晶型,对颗粒度的影响相对较小,温度增加,沉析平均粒度略有增加;溶液初始浓度对平均粒度的影响相对较大,膨胀速度亦是影响粒度及其分布的一个因素。快速膨胀溶液,并使过饱和度足够大,使过饱和度主要消耗在成核上,可得到颗粒小、分布窄的HMX颗粒。

The particle size and crystal morphology control of precipitated 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane (HMX) in acetone solution using supercritical CO_2 anti-solvent were studied. The results show that the different particle size and size distribution can be obtained by changing the way of solution expansion. When the solution is expanded continuously, the wide particle size distribution is obtained, and the average particle size of 3.1μm and 9.5μm with narrow size distribution can be obtained when...

The particle size and crystal morphology control of precipitated 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane (HMX) in acetone solution using supercritical CO_2 anti-solvent were studied. The results show that the different particle size and size distribution can be obtained by changing the way of solution expansion. When the solution is expanded continuously, the wide particle size distribution is obtained, and the average particle size of 3.1μm and 9.5μm with narrow size distribution can be obtained when solution expansion by alternate gas injection pressure rises to 5.0MPa, holds 20 seconds, then rises to 10.0MPa. The high supersaturation ratio can be obtained within a few seconds using supercritical CO_2 anti-solvent and when the high supersaturation is mainly consumed by nuclei, according to Gibbs free energy theory, we can expect small particle size with narrow size distribution. HMX, for example, we can obtain 5.2μm β-HMX and even smaller particle size we can expect by decreasing the original solute concentration in solvent. Increasing the original solute concentration in solvent will cause crystal growth quickly at the same expansion conditions. The effect of temperature on particle size is much smaller than that of pressure. When the experimental temperature is more than 50℃ or partial superheat caused by rapidly exothermic crystallization, by pressure process etc., α-HMX will be formed, and some measures to prevent α-HMX can be taken.

文章研究了超临界CO2GAS沉析HMX丙酮溶液过程的颗粒形貌控制。研究结果表明,GAS过程中不同的膨胀方式,可以得到不同的沉析颗粒大小和尺寸分布。当溶液持续膨胀时,得到多种粒度尺寸的颗粒,尺寸分布宽;当溶液从开始到5.0MPa,维持20s后再上升到10.0MPa分段膨胀时,得到平均粒度在3.1μm和9.5μm分段的颗粒尺寸和分布。快速膨胀溶液,可以在短时间内产生高过饱和度,根据吉普斯自由能理论,当溶液的过饱和度主要消耗在成核过程时,可以得到平均颗粒度为5.2μm、粒度分布比较窄的HMX颗粒,降低溶液初始浓度,可得到更小的颗粒。溶液的初始浓度增加,在相同膨胀度的情况下,单位体积内新相颗粒密度增加,使颗粒增长比较明显。GAS过程中,温度对过饱和度的影响相对比较小,与传统的结晶过程一样,温度是影响晶形的主要因素,当操作温度超过50℃或增压膨胀、沉析结晶放热引起的局部温度过高时,都会产生α HMX,适当搅拌可以防止局部过热以防止α HMX产生。

 
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