The detective on the phone explained how someone had sprayed a canister of Freon into the dead-bolt lock and then tapped the lock with a cold chisel to shatter the cylinder.

侦探在电话里向我演示了某人是如何往弹子门锁里喷罐装气态氟利昂，然后用小凿子把锁头敲碎。

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Dead weight loading simulating that of the bolts was applied at the bolt holes through the agency of steel balls and buttons.

螺栓荷载是用死荷重来模拟的，以钢球和压钮作为代用件，通过它们将此荷载施加于螺栓孔。

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Open in Emergency: Under no control. The door can be opened even if the dead bolt is locked.

应急开启：不受任何控制，即使方舌反锁，也能开门。

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Corbett said it may be difficult to get out a dead-bolt door, or some doors might be blocked by equipment or boxes.

CNN: Be ready for emergency at a crowded public gathering

Apart from its merits as a hops-delivery system, it sports the Dead's lightning-bolt skull logo, which can't help but encourage responsible debauchery, as well as occasional flashbacks.

WSJ: An Enduring Tradition