SF6 gas has been widely used in the power equipments as an excellent electric insulating and arc-quenching medium.

SF 6气体作为优异的绝缘介质和灭弧介质，被广泛地应用于各种电力设备中。

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Reclamation of the SF6 gas from the switch.

能对SF 6电器开关的气体进行回收。

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SF6 is safe if there is adequate oxygen present in inhaled air.

当吸入的空气中含有充足的氧气时，SF6是对人体无害的。

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On a slightly smaller scale, there's the huge Siemens breaker I saw at the Bonneville Power Administration. (If you're thinking of buying one as an art object, ask your dealer for a Siemens 72.5 kV SF6 sulfur hexafluoride power circuit breaker).

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