发烟燃烧 meaning in English

smolder
smoulder

Test method for smoldering combustion potential of coffon - based batling
棉絮片发烟燃烧性能试验方法
Methods of test for the ignitability of bedcovers and pillows by smouldering and flaming ignition sources
采用发烟燃烧和火焰点火源方法对床罩和枕头进行可燃性的试验方法
Textiles - burning behaviour of bedding items - general test methods for the ignitability by a smouldering cigarette
纺织品.床上用品的燃烧性能.由发烟燃烧的香烟引起的可点燃性的一般试验方法
Textiles - burning behaviour of bedding items - specific test methods for the ignitability by a smouldering cigarette
纺织品.床上用品的燃烧性能.由发烟燃烧的香烟引起的可点燃性的特殊试验方法