若应对得当，服务外包业可借机实现产业机构和服务层次的升级。
Dealt with appropriately, service outsourcing industry can achieve the upgrade in industrial organization and service level.
设计时采用模块化、层次化、开放式的思想，便于今后数控系统的维护、扩展和升级。
Modular design, level of openness of the thinking for the future of the nc system maintenance, expansion and upgrades.
设计时采用模块化、层次化、开放式的思想，便于今后数控系统的维护、扩展和升级。
Modular design, level of openness of the thinking for the future of the nc system maintenance, expansion and upgrades.
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