直接: direct; immediate系统: system区: H region; H间接系统区: indirect system area直接系统: direct system直接系统输出: dso direct system output系统区: system region联机或直接系统: on-line process optimization分块系统区: partition system area系统区范围: scope of the system area系统区间: system interval系统区域: system area; system realm; system region直接系数: direct coefficients系统区域地址: saa system area address电搭接系统: electrical bonding system对接系统: docking system防铰接系统: anti-link system复接系统: redundant system焊接系统: welding system汇接系统: system, tandem间接系统: indirect system铰接系统: articulated system连接系统: connected system强连接系统: strongly connected system终接系统: termination system