GPS is the best portioning poday. As GPS is nearly completed, NNSS-navy navigation satellite systems and radio navigation, systems would gradually be weeded out.
GPS将是世界上最佳的定位系统。由于GPS将近完成，NNSS——子午仪导航卫星系及大部分台、站导航系统将被逐步淘汰。
GPS is the best portioning poday. As GPS is nearly completed, NNSS-navy navigation satellite systems and radio navigation, systems would gradually be weeded out.
GPS将是世界上最佳的定位系统。由于GPS将近完成，NNSS——子午仪导航卫星系及大部分台、站导航系统将被逐步淘汰。
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