查询词典 fractional distillation

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。

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。

An apparatus for the fractional distillation of ''.

规模生产从氨基酸发酵中分馏蒸馏''。

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

炼油厂所使用的主要分离方法是分馏，不过分馏所得一般都需要一步加工才能成为可供销售的石油制品。

Fractional distillation is a physical method which cannot decompose compounds.

分馏法只属物理方法，不能分解化合物。

Since 1980s, for solving the problems in purification of high sulfur content natural gas, the separation methods based on the physical principle have been developed abroad, and two methods such as low temperature fractional distillation and membrance separation are successful.

八十年代以来，为解决酸气含量很高的天然气净化问题，国外致力于开发利用物理原理进行分离的方法，已取得成功的有低温分馏和膜分离两种方法。

The semimicro fractional distillation and the semiconducting refrigeration techniques were applied to the fast determination of sulfur dioxide in foodstuffs.

提出了一种采用半微量蒸馏-半导体制冷技术的食品中二氧化硫快速提取的新方法，研制出了可在15 min内完成二氧化硫提取的食品检测快速蒸馏提取装置。

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。