人体是一个开放、复杂的系统，和外界环境存在着各种复杂的关系。为了保证正

The human body is an open, complex systems, and the external environment there are a variety of complex relationships. In order to ensure the normal physiological activity and good ergonomics, making the body's own physiological adjustment (a lot of heat through metabolism, which has a small part for physical activity and muscle work, in order to sustain life or engage in work) outside, to maintain the body's heat balance must be controlled ambient temperature environments, ensure that the heat produced by the body can be distributed in time into the surrounding environment, so as to achieve the purpose of maintaining body heat balance and maintain proper body temperature. Thus, the body can be seen as capable of substantially maintaining a constant temperature (36.5 deg.] C) of the thermostat.

The human body is an open and complex system, and there are various complex relationships with the external environment. In order to ensure normal physiological activities and good ergonomics, the human body in the physiological regulation of its own (through metabolism to produce a large amount of heat, a small part of which is used for physiological activities and muscle work to maintain life or engage in labor), in order to maintain the body's thermal balance must control the surrounding temperature environment, to ensure that the body produces heat can be distributed to the surrounding environment in a timely manner, so as to maintain the body's thermal balance, maintain appropriate body temperature purposes. As a result, the human body can be thought of as an automatic temperature regulator that can basically maintain a constant temperature (36.5 degrees C).

The human body is an open and complex system, which has various complex relations with the external environment. In order to ensure normal physiological activities and good man-machine work efficiency, in addition to the physiological regulation of human body (a large amount of heat is generated through metabolism, a small part of which is used for physiological activities and muscle work to maintain life or work), in order to maintain the heat balance of human body, the surrounding temperature environment must be controlled to ensure that the heat generated by human body can be distributed to the surrounding in time In the environment, it can maintain the heat balance of human body and keep the proper temperature. Therefore, human body can be regarded as an automatic temperature regulator which can keep constant temperature (36.5 ℃).