着火条件下电缆的通用试验方法。垂直安装的绞合线或束状电缆的火焰垂直蔓延试验。第2 - 2部分：程序。
Common test methods for cables under fire conditions - test for vertical flame spread of vertically-mounted bunched wires or cables - Part 2-2: procedures - Category a.
着火条件下电缆的通用试验方法。垂直安装的绞合线或束状电缆的火焰垂直蔓延试验。第2 - 3部分：程序。
Common test methods for cables under fire conditions - test for vertical flame spread of vertically-mounted bunched wires or cables - Part 2-3: procedures - Category b.
“这使得火势迅速沿垂直方向和附近蔓延，在极短的时间里形成了大范围的火灾。”陈说。
"That made the fire quickly spread in vertical directions and nearby areas, forming a large-scale fire in a very short time," Chen said.
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