首页 > Term: impregnated timber
impregnated timber
Timber that has been treated either to make it flame resistant or to protect it from destruction by fungi and insects. Cover boards used with steel arches are often vacuumpressure impregnated with a flame-retardant preservative for safety and to comply with the flame-proofing requirements covering escape roadways.
- 词性: noun
- 行业/领域: 采矿
- 类别 一般矿业; Mineral mining
- Government Agency: USBM
0
创建者
- ed.young
- 100% positive feedback
(Milwaukee, United States)