Under buyer's dominance, purchasing the capability of high strategic contribution can be realized through simple linkage network; while the purchasing the capability of lower strategic contribution can be realized through parallel linkage network; 在买方优势条件下,采购战略贡献高的能力可以通过发展单联网络来实现,而采购战略贡献低的能力可以通过发展并联网络来实现;