“refining”的概念、定义、翻译、参考文献-科学参考

refining

Chemistry

Chemical Engineering

1. A process used to purify an impure material but that does not involve chemical change. The refining of metals involves either hydrometallurgical or pyrometallurgical processes. The cupellation process involves the extraction of silver from lead by melting the lead in a vessel known as a cupel and blowing air over the surface to oxidize the lead and leave pure silver.

2. The refining of petroleum products involving the conversion of crude oil into usual petroleum products such as naphtha, diesel fuel, kerosene, and LPG. It is carried out in petroleum refineries.

单词	refining
释义	refining Chemistry The process of purifying substances or extracting substances from mixtures. Chemical Engineering 1. A process used to purify an impure material but that does not involve chemical change. The refining of metals involves either hydrometallurgical or pyrometallurgical processes. The cupellation process involves the extraction of silver from lead by melting the lead in a vessel known as a cupel and blowing air over the surface to oxidize the lead and leave pure silver. 2. The refining of petroleum products involving the conversion of crude oil into usual petroleum products such as naphtha, diesel fuel, kerosene, and LPG. It is carried out in petroleum refineries.
随便看	constant rate drying constant returns to scale constant-R network constants constant-separation traversing constant slope constant speed constant term constant variable constant-velocity gather constant-velocity stack constant-voltage source constative constellation Constellation Observing System for Meteorology, Ionosphere and Climate COnstellation of small Satellites for Mediterranean basin Observation constitution constitutional isomerism Constitution of the USA constitutive equations constitutive((in genetics)) constitutive/regulative constrained optimization constrained optimum constraint