The main aim of inbreeding is to standardise, to fix desirable inherited characteristics and to dispel undesirable ones.同系交配的主要目的就是实现标准化，保持理想的遗传特性，并消除不良的特性。There is a drive both to standardise components and to reduce the number of models on offer.正在为实现零部件标准化和减少推出的型号数量而努力。