flame impingement meaning in Chinese

火舌舔触
火焰冲击

Fire tests on building materials and structures - method of test for ignitability of products by direct flame impingement
建筑材料和结构的燃烧试验.第12部分:与火焰直接紧密接触制品可燃性试验方法
Standard test method for effects of flame impingement on materials used in protective clothing not designated primarily for flame resistance
主要不是用于耐火的防护服用材料遇火效应的标准试验方法