fire protection and smoke extraction
fire protection and smoke extraction
防火排烟
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Based on the present fire protection code, optimizes control circuits of smoke control and extraction fans and pressurization fans, in order to increase the reliability of the system.
根据现行消防规范，对消防排烟风机、正压风机控制电路进行了优化，以提高系统的可靠性。
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