The true value of positive audible feedback is that its absence is an extremely effective problem indicator.
正面听觉反馈真正的价值在于，它的缺失是非常有效的问题指示器。
Overload, over-temperature, or shaft jam conditions stop the motor and are signaled by a display indicator and audible alarm.
过载、超温或轴卡滞情况发生会停止电极的工作并且会由显示指示器和声响警告器给出信号。
Audible and visual indicator alarm.
指标和声光报警。
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