沸点范围 meaning in English

boiling spread

Testing of petroleum products ; determination of boiling range distribution ; gas chromatography method
石油产品检验.沸点范围测定.气体色谱法
Methods of sampling and test for halogenated hydrocarbons - determination of boiling range of chlorofluorinated hydrocarbons
卤代烃取样和试验方法.第9部分:氯氟代烃沸点范围测定
Test method for boiling range distribution of petroleum distillates in the boiling range of 174 to 700 c by gas chromatography
用气相色谱法在174到700 c沸腾范围间测定石油馏出物沸点范围分布的试验方法