其中最有挑战的是美国国家防火协会的285测试方法。
The most challenging of these are the criteria associated with the National Fire Protection Assn. 's (Quincy, Mass. ) NFPA 285 test method.
美国国家防火协会对指示器在某些行业的应用有特殊要求，例如医院等。
The NFPA has specific requirements for remote annunciators used in some applications, such as hospitals.
如果安装在防火喷淋系统上，所有机械式止回阀，如警告止回阀和防回流阀，都应该根据美国国家消防协会NFPA 13和NFPA 25标准进行流量测试和内部检查。
If installed on a fire sprinkler system, all mechanical checks, such as alarm checks and backflow preventers, should be flow tested and inspected internally in accordance with NFPA 13 and NFPA 25.
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