提炼类 Extract Class
提炼子类 Extract Subclass
提炼超类 Extract Superclass
锻炼类型 workout type
油类提炼 oil extraction
炼钢工艺分类 Kinds of Steelmaking Processes
精炼谷类食物 Cereal Food Fines
炼类
"Refining category"
以上为机器翻译结果，长、整句建议使用 人工翻译 。
醇胺降解、装置腐蚀和溶液发泡是炼厂气醇胺法脱硫装置经常遇到的三类操作问题。
Ethanolamine degradation, equipment corrosion and solution foaming were three operation problems met frequently in the desulfurization units of refinery.
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