与蒸汽压渗长期透法（VPO）相比，测定分子量数据的相对误差小于10％。
The relative errors of the molecular weights determined by cryoscopy are less than 10% as compared with those determined by VPO method.
利用蒸汽压渗透法对不同系列的DFI进行了分子量测试。
Different series of DFI were tested by molecular weight apparatus.
上述工艺可使研究法辛烷值提高1．8～31单位，并使其安定性得到改善，蒸汽压有所降低。
The octane number may be improved about 1.8-31 units by above mentioned processing, the stability is also improved, and the vapour pressure is decreased.
上述工艺可使研究法辛烷值提高1．8～31单位，并使其安定性得到改善，蒸汽压有所降低。
The octane number may be improved about 1.8-31 units by above mentioned processing, the stability is also improved, and the vapour pressure is decreased.
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