index of hydrogen deficiency

... In Home Devices 在家里的设备 Index of Hydrogen Deficiency 缺氢指数 IHD INLAND HAULAGE AT DISCHARGE1. 内陆转 …

不饱和度（degree of unsaturation）,又称 缺氧指数（index of hydrogen deficiency ）或双 键等价值(double bond equivalence )。