Three types of thermal sensitive polyurethane TSPU(a)、TSPU(b)and TSPU(c),were synthesized and their phase transition temperature of the soft segment(defined as switch temperature,Ts) were measured.

The skip diaphragm temperature switch introduced in this paper is designed based on the characteristics of skip diaphragm andsheet bimetals.

Focusing on a new method of protection is the increase transducer input of an air switch,air pressure-sensitive switch on the parallel resistance(400 V voltage varistor 865 kΩ optional) when there are high-voltage varistor time will be short-circuit air trip switch quickly to protect the inverter,the inverter greatly reduce the failure rate the scientific and practical results are obvious.

Under different air temperature and relative humidity conditions, when protracting the moisture adsorption time, the moisture content increase and influences of initial moisture content, temperature and relative humidity on rice cracking caused by moisture adsorption were studied.

In order to study the situation of tunnel smog and temperature after the fire in Tunnel,this paper established a fire model for calculating air temperature,the temperature of cliff side and calculating the concentration of fire smog in the tunnel with the fire principle of the underground project.

The air temperature and absolute roughness are key factors affecting frictional resistance of brick or concrete ducts for pressurization air supply systems and exhaust smoke systems in high-rise buildings.