... 滚珠轴承工艺学 ball bearing technology 滚珠轴承铰链 ball bearing hinge 滚珠轴承磨粉机 ball bearing pulverizer ...
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iron hinge with ball bearing 铁滚珠轴承铰链
offset hinge with ball bearing 滚珠轴承偏置铰链
ball-bearing butt hinge 滚珠轴承铰链
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