This paper introduces the characteristics and differences of multi-grade oil and one-grade oil, the points for attention of selecting multi-grade oil are presented.
在简述了多级油与单级油的特点与区别后，指出了多级油选择与使用中应注意的事项。
The edible oil as one kind of high grade cooking oil is suitable for all people and can provide various beneficial nutrient matters.
该浓缩剂和精炼油按一定比例调配，制成食用油，适合不同年龄和性别的人群食用，可提供多种对人体有益的营养物质。
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