The three latest satellites will jointly undergo testing of a new system of navigation signaling and inter-satellite links, and start providing navigation services when ready.
The three latest satellites will jointly undergo testing of a new system of navigation signaling and inter - satellite links , and start providing navigation services when ready .
How many satellites will be used to test a new system of navigation signaling?
How many satellites will be used to test a new system of navigation signaling ?
three
three