The material spread of flame along the surface of a product orientated in a vertical plane, is determined by this test method using the apparatus shown below.
材料的火焰沿着在定位在垂直面上的产品的表面传播，是由使用以下的实验装置的测试方法所确定的。
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Amendment 1 - Tests on electric and optical fibre cables under fire conditions - Part 3-10: Test for vertical flamespread of vertically-mounted bunched wires or cables - Apparatus.
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： Part 7)并被立法者和专家广泛使用。