... multimodal communications interface 释义：多模态通信接口 needle hub 释义：针头接口 network interface 释义：网络接口 ...
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... 针管needle tube 针座needle hub 排气接头vent fitting ...
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blood needle hub injection mold 采血针针座多款模具
The internal of the core axle end is provided with a needle bearing, which balances the bearing of assembly wheel hub and enable the operating more stable.
在芯轴端部 内侧设置滚针轴承，使整个轮毂单元的受力平衡，运转更平稳。
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