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卫星无线电定位业务
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卫星无线电定位业务
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卫星无线电定位业务
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radio determination satellite service,RDSS
卫星无线电定位业务
由用户以外的控制系统,通过用户应答来完成卫星至用户的距离测量和位置解算,采用三球交会测量定位原理完成定位的业务。
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safety of concentrators
safety of cultural relics movement
safety of downhole fishing and releasing stuck operation
safety of downhole operation
safety of downhole operation with acid
safety of downhole operation with sand
safety of downhole perforating operation
safety officer
safety of fracturing and acidizing operation
safety of high pressure water injection and oil production
safety of hot work in long-distance pipeline
safety of hydrogen systems
safety of microbial application
safety of missile
safety of molding and core making
safety of monoclonal antibody
safety of nuclear power plant
safety of nuclear weapon
safety of oil and gas pipeline emergency repair
safety of oil and gas pipeline maintenance
safety of oil and gas testing
safety of oil production downhole operation
safety of oxygen systems
safety of plate shears
safety of pressure casting
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