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The nut and bolt head can be simply drawn as Outlines.
螺母及螺栓头部简化画出。
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The anchor lock is comprised of a lock head, a lock tail and a bolt.
锚锁由锁头、锁尾和螺栓三部分组成。
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Side view of square head bolt with adjustable thread length.
螺纹长度可调整的平头一字槽螺钉的侧面图。
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Top view of square head bolt.
方头螺钉的俯视图。
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Top view of square head bolt.
方头螺钉的俯视图。
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