The gravimetric observation curves at Chengdu Standard Station showed significantly annual variation period, with air pressure and ground water being main interference factors.
The simulation results indicate that the pseudo-range remaining errors will be increased with the distance between base-station and GPS user and in the case of low satellite elevation.
3
夹钳系统能适合不同的厚度的工作,设有基准零位挡块,工件由滚球工作台支撑。
And the princer system can suit workpiece with different thickness and there is benchmark null position stop. The workpiece is supported by ball operation board.