Hard to make head or tail out of the center-satellite system: First, the large enterprises which serve as the "heads" of the center-satellite networks in Japan, are mainly responsible for covering the large expenses for R & D for key parts, product planning and R & D, and control of the sales network.
首先，日本中衛體系中的龍頭大企業，主要負責耗資較大的關鍵零組件開發、產品企劃研發、及行銷體系的掌握等。