... sealing-off 拆焊 sealing area 密封面积 vacuum pack sealing machine 真空包封机 ...
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pack-off sealing area 封隔密封区
bead sealing area 胎圈与胎辋着合面
primary sealing area 第一密封面
secondary sealing area 第二密封面
sealing surface area 密封面积
Fire Area Sealing [矿业] [安全] 火区封闭
The valve outlet sealing area is also flat.
阀门排气口密封区域也是平的。
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Firefighters arrived within moments, sealing off the area and evacuating the house in case any further debris fell from the roof.
BBC: Vortex from plane landing at Heathrow damages roof
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