您好，欢迎致电浙江球冠集团！

Hello, welcome to call Zhejiang Kukun Group.

youdao

整个开孔刀的外形呈削去球冠的球形。

The shape of the whole boring cutter is of a sphere without a spherical cap.

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您好，欢迎致电浙江球冠集团，请稍候。

Hello, Welcome to call Zhejiang Grunning group, please hold on!

youdao

您好，欢迎致电浙江球冠集团，请稍候。

Hello, Welcome to call Zhejiang Grunning group, please hold on!

youdao