对结合安全系统功能和基本过程调节控制来说，降低成本的压力和单一控制系统硬件来源的压力是不合理的。
Pressure to reduce costs and to single-source control system hardware should not be justification for combining safety system functionality and basic process regulatory control.
对结合安全系统功能和基本过程调节控制来说，降低成本的压力和单一控制系统硬件来源的压力是不合理的。
Pressure to reduce costs and to single-source control system hardware should not be justification for combining safety system functionality and basic process regulatory control.
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