phase-locked filter 锁相滤波器
locked filter
锁定滤波器
以上为机器翻译结果，长、整句建议使用 人工翻译 。
When the doors of his buildings aren't locked, his neighbors filter through to borrow books and records or eat occasional communal meals.
WSJ: The Artist Next Door | Innovator of the Year 2012 Art
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