The study showed that the property of grain triboelectrification relates to grain moisture, friction velocity, dielectric constant and friction material.
In this paper by applying the poloidal-toroidal decomposition of a velocity field, Oberbeck-Boussinesq equations are transformed into a new equivalent system.
Select the system of copolymerisation,the optimum reactive conditions of temperature and velocity,and the best quantity of emolsifier and initiator of acrylate emulsion thickener.
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.