Make the system start closed-loop running and use the process PID, control self-adjusting to achieve purpose of stable speed.

将系统进入闭环运行，利用过程PID控制自动调节达到稳定转速的目的。

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Super size material cannot pass mesh, is being exhausted from port self-discharging, so as to achieve purpose of rapid screening .

超径物料不能过网，由自动排渣口排出，从而达到快速筛分之目的。

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He said it was "a contribution made to strengthen the climate of understanding necessary so that the parties that are starting the dialogue achieve the purpose desired by all Colombians".

BBC: Ivan Marquez (left) and fellow Farc negotiator. File photo

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"My intention was to skate very close to the letter of the law with only one purpose - to achieve a better situation, " he said.

BBC: The pathologist