在每一次本生灯灯火焰燃烧10秒钟移开后，没有任何一个试片被火焰点燃超过10秒钟。
The specimens may not burn with flaming combustion for more than 10 seconds after either application of the test flame.
在每一次本生灯灯火焰燃烧10秒钟移开后，没有任何一个试片被火焰点燃超过10秒钟。
The specimens may not burn with flaming combustion for more than 10 seconds after either application of the test flame.
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