Because of the need to control the electrical circuit more so than the complex, day-to-day production operations, frequent electrical failures, thus affecting production.

因其所要控制的电机较多所以电路较复杂，在日常的生产作业当中，经常发生电气故障，从而影响生产。

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Simply field operations personnel experience knowledge, so it is difficult to determine the model of complex systems to effective control.

只需现场操作人员的经验知识，使模型难以确定的复杂系统得以有效的控制。

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Our customers depend on standard parts and designs, so we must maintain consistency and process control among plants and operations that are often a half a world away.

FORBES: Building Visibility, One Person At A Time

Aviation experts contend that even if intruders were able to access a control tower and disrupt operations, the nation's air traffic control system is designed with multiple back-ups so that other facilities could pick up control of the affected air space.

CNN: Union claims security lax at many air control towers