fix focus meaning in English

固定焦点,固定焦距

Fix focuses on the front - office aspects of trading associated with the negotiation and execution of the trade
Fix关注的是交易的前端事务方面，与交易的协商与执行有关。
And it is mainly made up of optic - mechanical system ( including the lens of fixed focus ccd focal plane module and mechanical crust . ) image processing system and controlling computer and so on . each part is independence
该系统以计算机为系统控制处理平台，由光机系统(包括定焦镜头、数字ccd相机、消杂光光栏、机械外壳组成) 、图像处理系统和控制计算机等几大部分组成，且各个部分相互独立。