Thermometers are filled with pentane or alcohol.

温度计盛有戊烷或酒精。

The reliability of the apparatus had been checked by measuring the critical constants of n-pentane.

测定了正戊烷的临界参数以证实该装置的可靠性。

Also, the vapor pressures of n-pentane and 1-hexene at high temperatures were determined simultaneously.

同时，也测定了正戊烷、1 -己烯在高温下的饱和蒸汽压。

This paper deals with the production and properties of iso-pentane blown PU rigid foams, and safety control.

本文将详细讨论异戊烷发泡聚氨酯硬泡的生产和泡沫性能及安全控制。

When the density of supercritical n-pentane is constant, the solubility will increase with the temperature increasing.

当超临界正戊烷密度恒定时，溶解度还将随温度的增加而增大。

The catalytic activity and selectivity of the catalysts for n-pentane isomerization at ambient temperature were investigated.

考察了所制备的催化剂上常温下正戊烷异构化反应的活性和选择性。

The kinetics of thermal conversion of nickel compounds from pentane-soluble into pentane-insoluble fractions was also studied.

本文还对含镍组分的热转化反应动力学进行了探讨。

The aging kinetic models in the parameter of n-pentane asphaltene is derermined for simply discovering the anti-aging property of regenerated asphalt.

为了能够简捷、直观地揭示、评价再生沥青的老化性能，建立了以正戊烷沥青质为参数的老化动力学模型。

A method of GC FID is established for the determination of reaction products in synthesizing TAME with methanol and isopentene as raw materials and pentane as solvent.

建立了一种用于以甲醇、异戊烯为原料、正戊烷为溶剂合成TAME反应产物测定的快速GC - FID分析方法。

In order to produce n pentane desorbing agent for molecular sieve dewaxing unit, the refining tests for reformed n pentane oil were carried out by using complexing agents.

为了生产用于分子筛脱蜡装置的正戊烷脱附剂，利用络合化学试剂对切割分离后的重整正戊烷油进行了脱烯烃精制实验。

Benzene, cyclohexane and normal pentane etc. are frequently used as entrainers in industrial production of anhydrous alcohol through constant boiling and fine distillation.

工业生产中常用苯、环己烷、正戊烷等作夹带剂进行恒沸精馏生产无水乙醇。

Pentane combines advantageous physical and technical properties with good environmental data. As a blowing agent for polyurethane rigid foams, it is suitable for China market.

戊烷作为发泡剂具有良好的物理和工艺性能及合适的环境数据，适合于我国聚氨酯泡沫市场。

The aromatic structure of pentane asphaltenes is mainly peri condensed, while for resins the proportion of cata condensed and peri condensed aromatic structures is comparable.

戊烷沥青质中以迫位缩合的芳香环系结构为主，胶质组分中渺位缩合与迫位缩合的芳香环系结构各占相当比例。

However, simultaneously monitoring nitric oxide, carbon monoxide,hydro-peroxides, nitrites, nitrates, pentane and ethane in the breath, wouldallow a much more definitive diagnosis of asthma.

无论如何，同时地检测呼吸中的氧化一氮、一氧化碳、,过氧化氢物、亚硝酸盐、硝酸盐,、戊烷和乙烷，将能对哮喘做确定性的诊断。

It is found that the major nitrogen sources in coker gas oils are associated with relatively small pentane insoluble species and an even smaller, highly polar, hexane insoluble species.

研究发现，焦化蜡油中主要的富氮组分是较小分子的戊烷不溶物，或者是更小分子、极性较强的己烷不溶物。

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.

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。