The unit ' s eye relief of 12 mm allows for comfortable viewing while the 400 m range of detection makes this unit perfect for long distance viewing 它的12毫米视力补偿允许舒适观赏，而400米的观测范围，使它完善了远长距离观景。
2.
The factory has a set of independent research and development of a sound system and a full range of detection instruments and equipment ; cheung days alone the company has a sales network and improved after - sales service team 工厂有一整套独立完善的研究开发系统以及全套的检测仪器和设备;翔天公司有一套独自的销售网络和完善的售后服务队伍。
