自燃是种燃烧现象,如一堆稻草、棉籽或者玉米芯等农作物,在一定的温度和湿度下,堆放的时间过长,会突然自动燃烧起来,而且不需要任何明火的引燃。当然,自燃也是一种较复杂的燃烧,就让我们来认识一下自燃吧。所谓自燃,是指物质不用明火点燃就能够自发着火燃 Spontaneous combustion is a kind of burning phenomenon, such as a pile of straw, cottonseed or corn cobs and other crops, under a certain temperature and humidity, stacking time is too long, it will suddenly burn spontaneously, and does not require any ignition of the open flame. Of course, spontaneous combustion is also a more complex combustion, let us come to know about spontaneous combustion. The so-called “spontaneous combustion” refers to the fact that a substance can ignite spontaneously without being ignited by an open flame.