分子分离

By studying the membrane preparation process for the typical membrane materials of polystyrene and cellulose acetate as well as a new type membrane material of polyvinyl butyral,the effects of operating parameters on the membranes structure are determined.By the study on the thermodynamics involved in the ternary systerms of ScCO_2/solvent/polymer and the calculation of theoretical ternary phase diagrams,the phase demixing behavior during the membranes formation by ScCO_2 induced phase separation process are described.By studying thermodynamics involved in the quaternary systerms of ScCO_2/solvent/additive/polymer,the effect of a low molecular weight additive on the quaternary phase diagram and dimixing speed are revealed.

通过对传统膜材料聚苯乙烯、醋酸纤维素及新型膜材料聚乙烯醇缩丁醛进行ScCO_2诱导相转化制膜工艺的实验研究，给出了操作参数对膜形态结构的影响规律；通过研究ScCO_2/溶剂/聚合物三元体系热力学问题，并计算出相应铸膜体系的三元相图，对ScCO_2诱导相转化膜制备过程的分相成膜行为进行了分析与描述；通过研究ScCO_2/溶剂/小分子添加剂/聚合物四元铸膜体系的热力学问题，并借助于四元体系理论相图计算的结果，分析了小分子添加剂对相分离过程的影响。

Such factors as distillation temperature and distillation pressure, etc. which affect the process of preparing citral from Litsea cubeba oil and of preparing cinnamaldehyde from cassia oil by molecular distillation were investigated under rotation of 370～390 r/min,flow rate of 1drop/s,and temperature of cooling water 4～5℃.

利用分子蒸馏新技术从天然香料肉桂油和山苍子油中分离提纯肉桂醛和柠檬醛，用GC–MS联用仪对分离物中肉桂醛和柠檬醛的质量分数进行分析，重点研究了压力和温度等主要影响因素。

Our separator elements may cost a little more, but their performance, their dependability and the resultant savings in operational expenses keeps our customers returning for the Chicopee Separator.

我们的分离分子可能成本多一点，但他们的表现，其可靠性以及由此产生的储蓄业务开支保持我们的顾客返回的奇科皮分离。

"Dialysis In chemistry, separation of suspended colloidal particles from dissolved ions or small molecules via their unequal rates of diffusion through pores of semipermeable membranes (e.g., parchment, collodion, cellophane)."

渗析法：一种化学分离方法，利用通过半透膜微孔时扩散率的不同，分离悬浮的胶态粒子和溶于液体的离子或小分子的方法。

"Dialysis In chemistry, separation of suspended colloidal particles from dissolved ions or small molecules via their unequal rates of diffusion through pore s of semipermeable membranes (e.g., parchment, collodion, cellophane)."

渗析法：一种化学分离方法，利用通过半透膜微孔时扩散率的不同，分离悬浮的胶态粒子和溶于液体的离子或小分子的方法。

"Dialysis In chemistry, separation of suspended colloidal particles from dissolved ions or small molecule s via their unequal rates of diffusion through pores of semipermeable membranes (e.g., parchment, collodion, cellophane)."

渗析法：一种化学分离方法，利用通过半透膜微孔时扩散率的不同，分离悬浮的胶态粒子和溶于液体的离子或小分子的方法。

"Dialysis In chemistry, separation of suspend ed colloidal particles from dissolved ions or small molecules via their unequal rates of diffusion through pores of semipermeable membranes (e.g., parchment, collodion, cellophane)."

渗析法：一种化学分离方法，利用通过半透膜微孔时扩散率的不同，分离悬浮的胶态粒子和溶于液体的离子或小分子的方法。

"Dialysis In chemistry, separation of suspended colloidal particles from dissolved ions or small molecules via their unequal rates of diffusion through pores of semipermeable membrane s (e.g., parchment, collodion, cellophane)."

渗析法：一种化学分离方法，利用通过半透膜微孔时扩散率的不同，分离悬浮的胶态粒子和溶于液体的离子或小分子的方法。

"Dialysis In chemistry, separation of suspended colloidal particle s from dissolved ions or small molecules via their unequal rates of diffusion through pores of semipermeable membranes (e.g., parchment, collodion, cellophane)."

渗析法：一种化学分离方法，利用通过半透膜微孔时扩散率的不同，分离悬浮的胶态粒子和溶于液体的离子或小分子的方法。

"Dialysis In chemistry, separation of suspended colloidal particles from dissolve d ions or small molecules via their unequal rates of diffusion through pores of semipermeable membranes (e.g., parchment, collodion, cellophane)."

渗析法：一种化学分离方法，利用通过半透膜微孔时扩散率的不同，分离悬浮的胶态粒子和溶于液体的离子或小分子的方法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。