This property is used in the well known hygrograph.这一性质被用于人们所熟知的自记湿度计中....

n.自动湿度记录计...

hygrograph的音标：hygrograph的英式发音音标为：['haɪgrəgrɑ:f]hygrograph的美式发音音标为：['haɪgrəˌgrɑf]...