Changed: Vault hatch close sound has more ca-chunk.

改变：拱顶孵化近音有更多的钙块。

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Check that the doors, hood and trunk all open smoothly and close with solid sound.

检查（车）门、发动机罩和后备箱打开是否平稳，关闭是否牢固。

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A special chip called a digital signal processor analyses the incoming sound from microphones placed close to the dental drill.

在牙钻附近安置了麦克风，一种称为数字信号处理器的特殊芯片会对麦克风中获取的声音进行分析。

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At close range, the sound from these devices can be terrifying and painful.

NPR: Focused Sound 'Laser' for Crowd Control

To cover that retreat, the company trumpeted its Sonic Cruiser, a futuristic 250-seater jet that would fly close to the speed of sound and clip hours off long-haul flights.

ECONOMIST: Airbus and Boeing

Getting that sound means getting in close, which I don't mind doing.

NPR: Recording Story Rattles Producer