... fluid bearing液压轴承 fluid-film bearing流体膜轴承 footstep bearing立轴承 ...
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... footstep 踏板 footstep bearing 止推轴承 forage cutter 切家畜养料机, 家畜养料切碎机 ...
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... foil bearing 薄片轴承 footstep bearing 立式轴承 four-point contact ball bearing 四点接触球轴承 ...
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