How to read hydrazine(肼怎么读畊)

The Chinese character "肼" is pronounced as "jǐng". As for the character "畊", it is pronounced as "gēng". In English, there is no direct equivalent pronunciation for these characters. However, if you want to describe their pronunciations, you can say that "肼" is pronounced like "jing" with a rising tone, and "畊" is pronounced like "geng" with a falling-rising tone. ????