Skin type cosmetics, such as water twenty oil, cold cream, massage cream and ointment crack, mostly for oil-based, and nutrition-based cosmetics and fat, protein, vitamins and other nutrients.
护肤型化妆品，如含水廿油、冷霜、按摩膏和防裂膏等，多为油脂型，而营养型化妆品又含脂肪、蛋白质、维生素等营养素。
Based on the engineering practice analysis is made on the performance, advantages and disadvantages of this new-type construction water tube "PP-R", and provided the solutions as well.
从工程实际出发，分析了新型建筑水管PP—R管的性能、优点和缺点，根据实践经验对使用中可能出现的问题给予细致地分析，指出解决问题方法。
Based on practical situations, the article introduces the influence of different type fan to gas instantaneous water heater combustion thermal efficiency when heat load changes.
文章从实际情况出发，介绍了燃气快速热水器在热负荷变化时使用不同类型的风机对燃烧热效率的影响。
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