| 释义 |
blowdown /ˈbləʊdaʊn/noun [mass noun]1North American Trees that have been blown down by the wind: [count noun]: he tramped miles through blowdowns after the hurricane...- They were built as a system of separate fortresses, abatis lines, and on forested terrain, tree blowdowns.
- The understory data for intact forests matches the regeneration we recorded in blowdowns very closely, suggesting that blowdowns leave the understory undamaged.
- Although uncommon, large blowdowns generated from inland hurricanes provide an opportunity to study the effects of catastrophic windfall.
1.1The blowing down of a tree or trees: blowdown occurs when soil and root balls can’t resist wind pressure...- Disturbance rates derived from public land survey data have been widely cited in the literature, because they provide estimates of blowdown and fire occurrence at a regional scale prior to extensive European settlement.
- We reached the section of the trail where the bikes had to be carried due to copious amounts of blowdown.
- A freak straight-line windstorm caused a massive blowdown of trees in the area in 1999, and the profusion of fallen timber raised fears of a catastrophic firestorm.
2The removal of solids or liquids from a container or pipe using pressure: [as modifier]: designs had to withstand blowdown conditions...- The liquid blowdown stream from the main wet scrubbing system is mixed with a hot flue gas slipstream.
- Blowdown liquid withdrawn from the recycle acid liquor, may be recycled to the incinerator or further treated by neutralization, precipitation, and filtration of the precipitated toxic metals.
- Boiler blowdown is essential for the continued operation of any boiler.
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