Top view of countersunk slotted screw.

圆头一字槽螺钉的俯视图。

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Top view of countersunk slotted screw.

方头螺钉的俯视图。

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Name two head styles of machine screws that are countersunk.

沉头机螺钉有哪两种头型？

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Name two head styles of machine screws that are countersunk.

沉头机螺钉有哪两种头型？

youdao