These redundant and passive safety systems work without the help of an operator, or even electricity, during times of duress, be it man-made or natural.
在由于人为或自然事故发生而触发强迫停机期间，这些冗余的、被动的安全系统不需要操作员或者电力的帮助即可工作。
These redundant and passive safety systems work without the help of an operator, or even electricity, during times of duress, be it man-made or natural.
在由于人为或自然事故发生而触发强迫停机期间，这些冗余的、被动的安全系统不需要操作员或者电力的帮助即可工作。
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