zone refining technique 区域精炼法
spiritual medicine-refining technique 采药之法
after-refining technique 后精制工艺
NMP refining technique NMP精制工艺
ladle refining technique 钢包精炼工艺
Catalytic cracking is a main oil refining technique of making heavy oil lighter, and the mark and pillar of oil refining industry.
催化裂化是重质油轻质化的一个主要炼油工艺，是石油加工工业的标志和支柱。
By using high speed shearing to replace traditional glue refining technique, energy is saved, intensity of labor is reduced, and production efficiency is improved.
生产工艺采用高速剪切分散代替传统的炼胶工艺，节约能源减轻了劳动强度，提高了生产效率。
The purification effect of Al-Si melt by composite refining technique was studied, the main existing form and its interaction of inclusion and gas in Al-Si melt were introduced.
研究了复合精炼对铝硅合金熔体的净化效果，并介绍了铝硅合金熔体中主要氧化夹杂物与气体的存在形态及其相互作用。
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