The pluses comes from coder to send to the high speed counter, and the number of the high speed counter is operated in the program of PLC to get the absolute displacement anticipated.

采用PLC的高速计数器进行测量轮正转和反转时的脉冲信号的采集，通过进一步程序运算得到绝对位移量。

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More than 600 Russian-built helicopters are operated in the Middle East and North Africa, including around 200 in counter-terrorism roles in Afghanistan, Iraq and Pakistan, said Russian helicopters.

俄罗斯直升机公司宣称，在中东和北非地区，有超过600架毛子直升机，其中包括在阿富汗、伊拉克和巴基斯坦执行反恐任务的大约200架。

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The Royal Navy minehunter operated out of Bahrain conducting counter-piracy and security patrols as well as exercises with coalition forces.

BBC: HMS Middleton