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止推环✍️

止推环：半圆环形片，一侧覆以减磨合金，止推环的下片中部的外侧有一凸尾，安装时嵌入轴承盖槽内以防止止推环转动。

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Concert stage with colorful lighting and performance Concert stage with vibrant lighting effects
Concert video thumbnail
00:30
Concert video thumbnail
00:15
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