1·The position principle of Double star position system is introduced, and its shortcoming that is the bad real time of position is explained.
介绍了双星定位系统的定位原理，说明了其存在的定位实时性较差的不足。
2·Double star position system is one kind of regional position system build up.
双星定位系统是一种区域性定位系统。
3·Double Star Rubber Machinery, real rises up from the fall at!
双星橡机，真正从跌倒处奋起！
4·At present, the main means for time transfer are long or short wave, telephone, GPS, double star etc.
目前，国内外时间传递方式主要有长波授时、短波授时、电话授时、双星比对、GPS时间信息。
5·Double star rubber machinery products have been exported to Europe, Southeast Asia, the Americas, Africa, the Middle east and other regions.
双星橡机产品已远销欧洲、东南亚、美洲、非洲、中东等地区。