aA+ bB G (dc /dt) (dcr/dt) (dcc /dt -k(C.(CB) k称为反应的数率常数aA + bB = gG k称为反应的数率常数 (d / d ) 1 c t a vB A = −  (d / d ) 1 c t b B = −  (d / d ) 1 c t g G = −  b B a A = k(c ) (c )