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活动套筒
meaning in English
movable sleeve
Related Words
纸套筒
浮动套筒
形套筒
铰链套筒
调节套筒
膨胀套筒
滑动套筒
转动套筒
套筒千斤顶
活动套管
活动套接
活动特效
活动梯
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