... knuckle joint 叉形接头 knuckle pin nut 肘销螺母 knuckle pin 钩销 ...
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... 关节销盖 knuckle-pin cover 关节销螺母 knuckle pin nut; knuckle-pin nut 游动关节销 full-floating knuckle pinpiston ...
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knuckle-pin nut 关节销螺母
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