Blocking performance 阻塞性能 ; 阻塞特性
anti-blocking performance 防堵性能
water blocking performance 阻水特性
performance blocking
屏蔽性能
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Criminal gangs use this equipment to hide their activity, for example blocking the GPS tracking systems in the lorries or high-performance cars they seek to steal.
BBC: UK 'over-reliant' on GPS signals, engineers warn
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