unsaturated hydrocarbon meaning in English

不饱和碳氢化合物
不饱和烃
不饱烃

Aliphatic unsaturated hydrocarbon
不饱和脂族烃
In fact , unsaturated hydrocarbons , which are not usually present in virgin petroleum , are nearly always manufactured as intermediates during the various refining sequences
实际上，原油中一般不存在非饱和烃，几乎所有的非饱和烃都是在各种炼制过程中作为中间产品而产生的。
Maroclex is a range of low viscosity medicinal grade white oil . these oils are highly refined and purified products with food chemical stability , composed almost entirely of saturated hydrocarbons , unsaturated hydrocarbons which tend to react to form sludge , color bodies are removed in the refining process . medicinal grades are used in pharmaceutical , drug , cosmetic products and used as aids and lubricants for equipment and packaging that come into direct contact with food
优白为一种医药等级的高度精炼、极高纯度的矿物油产品，无色、无味、具备极佳的化学稳定性能，主要组成部分为饱和烃，容易引起反应而产生杂质以及颜色体的不饱和烃在精炼过程中除去，适用于直接与人体接触的医药、化妆品以及食品包装行业等。