The matching relationship between coal cutting and caving in fully mechanized topcoal caving face is analyzed in detail from the angle of reliability. The coupl
The thermodynamics and the growth kinetics of synthesis of the SiC whiskers (SICw) from rice hulls are studied in this paper. The results show that the intimate
The Intensity of heat output of coal,the rate of oxygen consumption and the influence function of coal size are tested by the big coal spontaneous combustion ex