These curves and datas are of great use to compositions and function of petroleum ether and liquid paraffin, this analytical method is based on TBP distillation of coal liquefied oil.
这些曲线及数据不仅对石油醚和液体石蜡的组成和使用性能有参考价值，而且这种分析方法为煤液化油的实沸点蒸馏奠定了基础。
The solvent content in discharged liquid paraffin (called rich oil) is not more than 5%, so as to ensure the maximum absorption rate.
出来的石蜡液（称作富油）含溶剂量不超过5％，以保证最大的吸收率。
High purity heavy liquid paraffin and low condensing point dewaxing oil are produced by urea complex using Daqing crude oil distilling cut as raw materials.
以大庆直馏柴油为原料，经异丙醇尿素脱蜡制得纯度较高的重质液体石蜡和低凝点脱蜡油。
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