Phased-mission-system (PMS) is a typical kind of complex system, which consists of consecutive and non-overlapping time periods phases, it includes the most combat processes of arm systems.

多阶段任务系统(PMS)是一种典型的复杂系统，它包括多个在时间上连续且无相互重叠的基本任务，武器系统的作战过程多数属于这种复杂系统。

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In general, the ability to gain a competitive edge — to increase speed and decrease costs — by leveraging skilled but lower-cost resources, experienced outsourcers, and overlapping time zones.

一般来说，能够利用有技能但成本较低的人力资源、有经验的外包人员，及重叠时区来获得竞争力——增加速度和减少成本。

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Therefore, overlapping iterations literally becomes impossible — unless you have a time machine!

因此，重叠迭代从字面上看是不可能的——除非您有时间机器！

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Each Administration and every major study, review, and strategy document continued to plan for two major operations in overlapping time frames.

CENTERFORSECURITYPOLICY: Center for Security Policy | The Measure of a Superpower: A Two Major Regional Contingency Military for the 21st Century | Page: 2

Thus, the idea of conducting two regional conflicts simultaneously was abandoned in favor of less precise terms, such as overlapping time frames or on short notice.

CENTERFORSECURITYPOLICY: Center for Security Policy | The Measure of a Superpower: A Two Major Regional Contingency Military for the 21st Century | Page: 2

The requirement to perform two such operations in an overlapping time frame, while maintaining other critical deployment and retain a strategic reserve would strain a force of this size and character, perhaps to the breaking point.

CENTERFORSECURITYPOLICY: Section IV: Building a Two-MRC Force for the 21st Century