它可以在建设完成验收后使用。
It can be used on completion of construction and after final checks.
它标志着北斗区域卫星导航定位的基本系统建设完成。
It marks the establishment of a basic system for the navigation and positioning network.
机组始建于1985年12月1日，但是在2000年中期建造终止，尽管当时该机组已经快要建设完成了。
Its construction began on December 1, 1985 but in the middle of 2000 it was stopped even despite the fact that the unit was almost finished.
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