At present, a large scale test method is used to assess spread of flame on wall and ceiling linings (BS 476: Part 7) and is commonly used by legislators and specifiers.
目前，大规模的测试被用来评估火焰在墙上和天花板上的传播能力(BS 476：Part7)并被立法者和专家广泛使用。
It requires that a test specimen be installed in a horizontal (ceiling) position and then be exposed to a gas burner flame.
这种方法要求被测试样安置在地面或者天花板上，然后面向燃气火焰。
It requires that a test specimen be installed in a horizontal (ceiling) position and then be exposed to a gas burner flame.
当样品被加热的时候，用一台氧气分析仪测量样品的热释率。
It requires that a test specimen be installed in a horizontal (ceiling) position and then be exposed to a gas burner flame.
当样品被加热的时候，用一台氧气分析仪测量样品的热释率。
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