【摘要】 用大庆、胜利、华北原油及其馏分油考察API图、API式和张-李式对ASTM、TBP、EFV曲线换算的准确性。三种方法对国产油的偏差均大于原文偏差;其中ASTM与TBP的换算以API式最佳,张-李式次之;ASTM与EFV的换算和TBP与EFV的换算以张-李式最佳。API式可以代替API图,使用API式和API图时应注意其适用范围。更多还原

【Abstract】 Using the Daqing, Shengli and Huabei crudes as well as their distillates, the accuracy of API charts, API formula and the Zhang-Li formula in interoonversion between ASTM, TBP as well as EFV curves were examined respectively. All methods have greater derivations for the domestic oik. Among them, the API formula is most suitable for the interconversion between ASTM and TBP, and the next is Zhang-Li formula, while for ASTM and EFV or TBP and EFV, the Zhang-Li formula is the best. The API chart can be replaced by the API formula but attention must be paid to its suitable range in using either of them.更多还原