馏分

Fractional distillation of petroleum is carried on in a still.

石油的分馏在蒸馏器内进行。

2It is not always easy to separate a mixture Of liquids into pure substances by fractional distillation.

采取分馏的办法把一种混合的液体分成纯物质，这并不总是很轻易的。

Krypton occurs in trace amounts in the atmosphere and in rocks and is obtained by fractional distillation of liquefied air.

在大气和岩石中只有极微量的氪，可以通过液态空气的分馏来得到它。

Krypton occurs in trace amounts in the atmosphere and in rock s and is obtained by fractional distillation of liquefied air.

在大气和岩石中只有极微量的氪，可以通过液态空气的分馏来得到它。

Vary 可变 Different components of air have different boiling points, they can be separated by fractional distillation of liquid air.

空气中不同的成分有不同的沸点，可把液态空气分馏来把它们分离。

An apparatus for the fractional distillation of ethanol from fermentation on an industrial scale.

规模生产从氨基酸发酵中分馏蒸馏乙醇的装置。

Under ordinary pressure, the experiment of simple distillation and fractional distillation is studied.

通过常压下简单蒸馏与分馏的实验研究，阐明双组分体系中温度平台与组分含量、沸点差值之间的关系。

Spectral analysis of soil trace elements is based on fractional distillation of the element being detected in electric arc plasma.

本法根据被测元素在电弧等离子体中的分馏效应原理，选择合适的电极规格和内标缓冲剂，对土壤微量元素进行定量测定。

The main method of separation used in refineries is fractional distillation, although further processing is normally required to produce marketable petroleum products.

分离石油主要采用的方法就是分馏，然后通过深加工才能得到可以销售的石油产品。

Pure DCP was obtained by fractional distillation in an atmospheric column with 20 theoretical stages.

纯磷酸氢钙得到分馏在一个大气柱， 20个理论阶段。

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。