联邦信号公司(Federal Signal corporation)所生产的联邦指挥数字化系统可对任何系统提供完善而可靠的激活和状态监控功能。
The Federal Commander Digital system, manufactured by Federal Signal Corporation, offers complete, secure activation and status monitoring of any siren system.
联邦信号公司(Federal Signal corporation)所生产的联邦指挥数字化系统可对任何系统提供完善而可靠的激活和状态监控功能。
The Federal Commander Digital system, manufactured by Federal Signal Corporation, offers complete, secure activation and status monitoring of any siren system.
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