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。
Cold upset female die of fillister head is the key mold in the manufacturing process of heading bolt.
冷镦圆头凹模是冷镦螺栓生产过程中的关键模具。
It is concluded that, the residual stress induced by cold expansion can maintain enough strength to prevent and retard fatigue crack initiation and growth in rail bolt hole.
结果表明，冷扩张过程所引入的切向残余压应力能保持足够的强度，以对钢轨螺栓孔起到显著的防裂和止裂作用。
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