) Combustible Dust - A combustible particulate solid that presents a fire or deflagration hazard when suspended ... very rapidly. Produces a large and sudden release of gas An explosion need not involve a fire. When ... development of internal pressure from a deflagration.”*NFPA Fire Protection HandbookDefines an Explosion as
.It is a shortcut to good English to keep a diary in English.③ - forestfire : ‘산불’ 이라고 합니다.- FDA ... matter as a fact.- trace : 흔적, 미량, 기미 , 영향ex) He could detect a slight trace of gas in the air