In large space building,several environment actors disadapt current fire detectors in early-stage fire detecting,such as width and scope of space,velocity of airflow,dust,temperature and humidity.
In order to increase water speed and turbulivity in ice-storage tank of direct evaporating and external melting ice-on-coil system, cambered baffles are installed in the ice-storage tank.
Successive gaslift craft wants computation to be in charge of a shoe to be in contented stability to take the critical velocity of flow of fluid and critical flow.
A system of verifying anemoscope in tobacco specific smoking machine was designal.The theory and component parts of this system was introduced and the method of velocity at a fixed point was modified.