Assertion: gunpowder's combustion | /r/HasProperty | gradual
Facets:
value: comparatively
type: MANNER
Source sentences:
text: Although a charge of powder appears to explode instantane-ously, yet both ignition and combustion are comparatively gradual; the flame is communicated from one grain to another, and each burns in concentric layers until it is con-sumed, so that the combustion of the grains is not simul-taneous.