In 2015, the system began its transition towards global coverage with the first launch of a new-generation of satellites, and the 17th one within the new system.
In 2015 , the system began its transition towards global coverage with the first launch of a new - generation of satellites , and the 17th one within the new system .
How did the BeiDou system begin transitioning to global coverage?
How did the BeiDou system begin transitioning to global coverage ?
with the first launch of a new-generation of satellites
with the first launch of a new-generation of satellites