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hydraulic lift
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hydraulic lift
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电梯
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hydraulic lift
液压电梯
靠电力驱动液压泵输送液压油到液压缸,直接或间接驱动轿厢的电梯(可以使用多个电动机、液压泵或液压缸)。
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yttrium
yttrium-86 (Y-86)
yttrium 90
yttrium-90
yttrium aluminium garnet
yttrium aluminum garnet laser
yttrium-barium-copper oxide superconductor
yttrium-barium-copper oxide superconductor, YBCO superconductor
yttrium ferrite
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Yuan'an flower-drum opera
Yuan'an Flower Drum Opera Troupe
Yuan Ang
Yuan'an Xian
Yuanba Gas Field
Yuanbao Qu
Yuanbaoshan Qu
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