选择溶剂要注意溶解力、蒸汽压与挥发度，使用中要注意安全。
When selecting solvent attention should be paid to its solubility, steam pressure and volatility in addition to safety.
一缩二乙二醇对邻氯甲苯和对氯甲苯相对挥发度影响的机理还需进一步探讨。
The mechanism of the effect of diethylene glycol on o -, p-benzol chloride system needs further investigating.
因其与其它组分间的相对挥发度很小，且本身又是热敏性物料，故分离难度大，能耗高。
Because of its low relative volatility with other components in system and its heat sensitivity, the separation difficulties and energy consumption are increased.
结果表明，加入合适的萃取剂可有效地提高旋光性戊醇对异戊醇的相对挥发度，减少分离所需的理论板数。
The results showed that addition of appropriate extracting solvent could increase the relative volatility of active amyl alcohol and decrease the number of theoretical plates.
如果一种组分改变另一组分的蒸气压，或者说，一种组分的挥发度取决于它在混合物中的百分比，那么这一定律将归于失败。
If one component changes another component's vapor pressure, or if the volatility of a component is dependent on its percentage in the mixture, the law will fail.
实验结果表明，加盐DMF分离能力强于溶剂DMF，C4在同温同压下的相对挥发度比DMF中的大。
The experimental results showed that DMF with salt had higher relative volatility of C4 and was better than DMF for separating C4.
以正戊烷、正己烷和正庚烷为分离物系，在简捷计算结果的基础上，利用商业模拟软件HYSYS研究了进料热状态、进料组成和相对挥发度等进料性质对立式隔板塔操作的影响。
The separation of n-pentane, n-hexane and n-heptane mixture with the dividing wall column(DWC) was simulated with commercial software HYSYS, and the optimized operation region was obtained.
去除辣椒籽和辣椒内部的白色海绵状筋脉可以使辣度降低，这是因为叫做“辣椒素”的挥发油在这些筋脉内较为集中。
By removing the seeds and the white spongy ribs that they're attached to, you can reduce the heat of the Chile. This is because a Chile's volatile oil, called capsaicin, is concentrated in the ribs.
根据实验数据研究了煤粉颗粒的分形特征及其煤粉粒度分布分形维数与其固定碳及挥发分含量的关系，提出了基于考虑能量、环境、安全的煤粉燃烧锅炉的煤粉经济细度新概念。
Fractal dimension and its relation with fixed carbon and volatile have been studied. Bring up a new concept of economic granule of coal powder in coal fired thermal power plant.
采用近红外漫反射光谱技术对高硅氧/酚醛预浸布的树脂含量、挥发分含量和预固化度等质量指标进行了在线测定。
The resin content, the volatile content and the pre-curing degree of the silica/phenolic resin prepreg cloth were on-line determined by near infrared diffuse reflection spectrum.
介绍了5E-MAC全自动分析仪在焦化厂分析洗精煤灰分、挥发分上的应用，以及其重现性、准确度验证。
The application of 5E-MAC type automatic analyzer in analyzing ash and volatile compound of cleaned coal, the verification for its reproducibility and accuracy were introduced.
而直接推力控制可以降低这些裕度，充分发挥发动机的性能。
Direct control of the thrust can reduce these margins and exploit potential performance of the engine.
方法：以挥发油所得量为评价指标，采用单因素比较法对提取过程中的加水量、药材粉碎度、提取时间、浸润时间及药材提取部位等进行了全面比较。
Methods: By single-factor experiment, quantity of water, degree of crush, time of extraction and soakage and the part of medicinal materials were studied.
结果：影响挥发油得率的主要因素为粉碎度，其次为蒸馏时间和料液比，最后为浸泡时间。
Result: the primary factor which influenced the extraction rate was grinding degree, then it was time of distillation, solid-liquid ratio and soaking time.
利用同时蒸馏萃取装置提取不同成熟度烟叶样品的挥发性香味成分，经毛细管气相色谱法对烟叶中主要香味成分变化进行了定性定量分析。
The main flavor compounds in different maturity tobacco were isolated by simultaneous distillation and extraction (SDE), and then were quantitatively analyzed by capillary gas chromatography.
XPS分析表明聚苯胺微管具有比其本体试样更高的掺杂度，这是由于聚苯胺微管极大的比表面积有利于掺杂及模板孔壁阻碍了掺杂剂挥发；
XPS shows that the doping degree of PANI microtubes is higher than that of PANI bulk sample, due to huge surface area of PANI microtubes.
XPS分析表明聚苯胺微管具有比其本体试样更高的掺杂度，这是由于聚苯胺微管极大的比表面积有利于掺杂及模板孔壁阻碍了掺杂剂挥发；
XPS shows that the doping degree of PANI microtubes is higher than that of PANI bulk sample, due to huge surface area of PANI microtubes.
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