时针就是北斗七星中的北斗一和北斗二的连线。
The hour hand is a line drawn through Dubhe and Merak, the two pointer stars of the Big Dipper.
已发布公开服务性能规范，定义了北斗二号系统服务覆盖范围、精度、连续性、可用性等性能指标。
The Open Service Performance Standard has been published, which defines the service coverage area, accuracy, continuity, availability, and other performance indexes of the BDS-2.
同样显眼的还有北斗勺柄的左起第二颗星星北斗六开阳，她与北斗七玉衡组成一个测试眼力的视觉双星。
Notable too in skygazing lore Mizar, second star from the left in the dipper's handle, forms a vision-testing visual double star with apparently close Alcor.
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