沸点
- boiling point
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[boiling point] 液体开始沸腾时的温度;特指液体的蒸汽压等于外部压力时的温度,因此,沸点随压力的减少而降低
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水的沸点是373开氏度。
The boiling point of water is 373 K
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水的沸点是摄氏100度。
The boiling point of water is 100 degrees centigrade .
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水的沸点是100摄氏度。
The boiling point of water is100 ° centigrade .
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他被问到水的沸点是华氏多少度。
He was asked for the boiling point of water in Fahrenheit .
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C4分离序列由于其组分沸点接近,较难分离。
Due to the close boiling points , C4 hydrocarbons are difficult to be separated .
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实验发现,由于能够与Cd形成高沸点的金属间化合物,PdCl2提高了Cd的原子化温度;
PdCl_2 can enhance the atomization temperature of metal Cd as it can form metal-metal compound .
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DSC法测定氮酮的汽化焓和正常沸点
The determination of vaporization enthalpy and normal boiling point of AZONE with DSC
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低温液体定义为正常沸点在–240°F(–150°C)以下的液体。
A cryogenic liquid is defined as a liquid with a normal boiling point below - 240 f ( - 150 c ) .
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本文介绍了一个适于终沸点为400℃或更高的微型反应器液相产物中C1~C5烃全组成分析的专用分析系统和分析方法。
The paper described a special system and method for analysing C_1-C_5 hydrocarbons in the micro-reactor liquid product which has an end boiling point ( b. p. ) of 400 ℃ .
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蒸汽蒸馏方法制备的样品通常不含高沸点或非挥发性组分,不会对GC造成污染;
The samples made by steam distillation do not contain any high-boiling and non-volatile materials and no contaminants are introduced to GC ;
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DES的性质稳定且沸点高,因而用气相色谱法检测须经衍生化。
DES is a stable and high boiling point compound , and thus derivation is required in GC analysis .
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新型高沸点溶剂MAE发光学的进展
Studies on MAE The Progress of Luminescence
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不饱和链烃沸点的QSPR研究
QSPR Research on the Boiling Points of Unsaturated Chain Hydrocarbons
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采用特种高沸点溶剂,获得了溶铸性能优良Nafion的溶液。
The technique of preparation of special Nafion solution by using high boiling-point dissolvent is reported .
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UNIFAC基团贡献法预测加压下的二元共沸点
Prediction of binary azeotrope at superatmospheric pressures by UNIFAC method
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脂肪醇沸点(b.p.)论通货膨胀问题与治理对策
The boiling point ( b. p. ) On Inflation and Countermeasures
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有关路基压实度问题的探讨脂肪醇沸点(b.p.)
On subgrade compactness The boiling point ( b. p. )
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而Cr主要以无机物形态存在,熔点和沸点又高,故最难挥发;
On the other hand , Cr mainly assumes the form of an inorganic matter with a high fusion and boiling point , thus making it the most difficult to volatilize .
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对于高沸点液体样品,将样品用挥发性有机溶剂稀释,采用浸渍法制样,即把空白KBr压片在稀释后的溶液中浸渍后挥发掉有机溶剂制样;
For high boiling point liquid sample , dipping a blank KBr pellet is used ;
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Fy型系列原油实沸点蒸馏装置的研制
Development of fy-type crude oil true boiling point distilation equipment
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烷基化硫转移反应脱硫是一种非加氢脱硫方法,该法利用FCC汽油中的烯烃与噻吩类硫化物进行烷基化反应,形成高沸点的烷基噻吩类硫化物,并通过蒸馏分离以达到脱硫目的。
As a non-hydrodesulfurization method , alkylation sulfur transfer technology achieves the purpose of desulfurization based on the alkylation reactions of olefins and thiophenic sulfur and followed distillation .
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脂肪醇沸点(b.p.)
The boiling point ( b. p. )
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但存在许多缺点,如除去溶剂的过程可能会造成许多挥发性成分的损失,萃取物中通常含有高沸点以及非挥发性的成分,对GC仪器造成损害等。
But there are many disadvantages , such as the loss of more volatile compounds in the process of solvent removal , the contamination of GC due to high-boiling and non-volatile materials in extracts .
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蒸发焓ΔHvb和沸点Tb估算的平均相对偏差分别为0.962%和1.40%。
The average percentage deviations of vaporization enthalpy Δ H_ vb and boiling point T_b estimation were 0.962 % and 1.40 % respectively .
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距序拓扑指数与烷烃及其衍生物沸点的QSPR研究
Study on the quantitative structure-property relationships of boiling points for alkanes and their derivates with topological indices of distance ordinal number
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根据裂解气组分沸点相差很大的特点,本文选用SRK作为热力学计算方法进行模拟。
Since the boiling points of pyrolysis gas components are different , SRK is selected for thermodynamic calculations .
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用低沸点工质的朗肯循环(ORC)方法回收低位工业余热
Recovery of industrial low-grade waste heat by means of organic rankine cycle ( ORC ) method with low boiling point working fluid
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应用键连接矩阵特征根,脂肪醇的沸点(Tb)变化规律分析两个分子结构信息参数EVM和PEI定量关联。
Using the eigenvalues of connecting - orbital matrix , the boiling point ( T_b ) change rule of fatty alcohols were modeled by two descriptors EVM and PEI .
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差示扫描量热法测定化合物沸点和蒸发热用DSC法测定非线性光学晶体ABP、APDA和BMC的恒压比热容
Measurement of specific heat capacity at constant pressure of the nonlinear optical crystals of ABP , APDA and BMC by differential scanning calorimeter
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在制备Nafion/SiO2固体超强酸催化剂的过程中,加入高沸点溶剂二甲基亚砜(DMSO),并增加140℃高温后处理过程,该工艺提高了催化剂的物理化学性能。
The traditional sol-gel technique for preparing Nafion / SiO_2 solid acid catalyst was improved by adding high boiling point dimethyl sulfoxide ( DMSO ) and aftertreatment at 140 ℃ .