详细解释:n. 余因子
【计】 余因子
【化】 辅因子
英语解释：
名词 cofactor:
a substance (as a coenzyme) that must join with another to produce a given result详细解释：
co.fac.tor
n.（名词）A substance, such as a metallic iron or coenzyme, that must be associated with an enzyme for the enzyme to function.辅助因素：必须与酶联合以使酶起作用的一种物质，例如金属铁或辅酶