hygrograph

n.

自动湿度记录计；

hygrograph
hygrograph
hair hygrograph
Thermo-hygrograph charts 1993
Thermo-hygrograph charts 1993
Thermo-hygrograph charts 1989
Thermo-hygrograph charts 1994
A Newly Designed Hair Hygrograph
Transformation of barograph and hygrograph readings to electric values
"Continuous records of temperature and humidity are obtained by use of either a hygrothermograph (top) or a hygrograph (left) and a ...