This is contrary (or in comparison) to the catastrophic failures that have been documented for air or oil circuit breakers.

这与被提供了为空气或油开关的灾难性故障是相反的（或在比较） 。

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For example, oil and air circuit breakers are now replaced by gas ones.

例如，油和空气断路器如今已被气体断路器取代。

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