您要查找的是不是：
- GPS单星定位GPS single-satellite positioning
- GPS单点定位GPS single-point positioning
- 多星定位multiple satellite location
- 单星无源定位Single satellite passive location
- 二星定位Dual-Satellite location
- GPS单点测速GPS absolute velocity determination
- 单星蓝monastral blue
- GPS单频接收机GPS Single frequency receiver
- GPS伪星定位测量技术与GPS地面沉降网的改善--以上海地区为例GPS Pseudolites Positioning and Improvement of GPS network in Land Subsidence--For a case of Shanghai
- 报销单expense account
- 表单memu
- 双子星binary star
- 运单freight note
- 下单place an order
- 北斗七星Triones
- 舱单shipping bill
- 男星male star
- 微星pint-size star
- 单层monolayer
- 买单check
