expansion

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expansion
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expansion
expansion

expansion
expansion joint
[建] 伸缩缝;补偿器;[机] 伸缩接头;膨胀节或缝

[网络短语]

expansion joint 伸缩缝,膨胀节,伸缩接头
expansion rail joint 钢轨伸缩调节器,温度调节器
expansion-joint filler 伸缩缝填料